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  1. By: United States. President (1897-1901 : McKinley)
    Publication info: Washington [D.C.] :G.P.O.,1901.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Agricultural experiment stations  Agriculture  Botany  Puerto Rico  Research  
  2. By: United States. President (1897-1901 : McKinley)
    Publication info: Washington [D.C.] :G.P.O.,1901.
    Holding Institution: Cornell University Library
    Subjects: Agricultural experiment stations  Agricultural research  Botany  Puerto Rico  
  3. By: Wetmore, Alexander,
    Publication info: 1910-1912
    Holding Institution: Smithsonian Institution Archives
    Subjects: Alaska  Canada  Culebrita, Isla  El Yunque  Field notes  Jackson  King  Ornithology  Photograph albums  Puerto Rico  R弛 Piedras  United States  United States Dept. of Agriculture  Vancouver Island  Virgin Islands  Washington  Wyoming  Yellowstone National Park  
    BHL Collections: Smithsonian Field Books collection
  4. By: Wetmore, Alexander,
    Publication info: 1911-1912
    Holding Institution: Smithsonian Institution Archives
    Subjects: Alaska  Aleutian Islands  Black-and-white photographs  Canada  Chernofski  Field notes  Nanaimo  Ornithology  Puerto Rico  Seattle  Shishaldin Volcano  Tahoma (Ship)  Unalaska  United States  United States National Museum  Vancouver Island  Virgin Islands  
    BHL Collections: Smithsonian Field Books collection
  5. By: Vilaró Díaz, Juan.
    Publication info: Habana :Impr. de A. Alvarez y Cía.,1893.
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
    Subjects: Cuba  Fishes  Puerto Rico  United States
    BHL Collections: Publicaciones en Español
  6. By: Van Volkenberg, H. L. (Horatio Luther),
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture, Office of Experiment Stations :[1939]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Parasites  Puerto Rico  
  7. By: Gundlach, Johannes Christoph,
    Publication info: S.l.,s.n.,1878-83
    Holding Institution: Multiple institutions
    Subjects: Amphibians  Birds  Fishes  Mammals  Mollusks  Puerto Rico
    BHL Collections: Publicaciones en Español
  8. By: Tower, W. V.
    Publication info: San Juan, P. R.,The Porto Rico progress publishing co.,1911.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Bees  Puerto Rico  
  9. By: Tower, W. V.
    Publication info: San Juan, P. R.,The Porto Rico progress publishing co.,1911.
    Holding Institution: Cornell University Library
    Subjects: Bees  Puerto Rico  
  10. By: Tower, W. V.
    Publication info: n.p.,1910?
    Holding Institution: Cornell University Library
    Subjects: Bees  Puerto Rico  
  11. By: Wetmore, Alexander,
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1916.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Birds  Puerto Rico
  12. By: Porto Rico Agricultural Experiment Station.
    Publication info: Washington :G.P.O.,1903-
    Holding Institution: Multiple institutions
    Subjects: Agriculture  Periodicals  Puerto Rico  
    BHL Collections: Expanding Access to Biodiversity Literature
  13. By: Bogart, James P., - Royal Ontario Museum.
    Publication info: Toronto :Royal Ontario Museum,1981.
    Holding Institution: University of Toronto - Royal Ontario Museum Library & Archives
    Subjects: Amphibians  Chromosomes  Cuba  Eleutherodactylus  Genetics  Leptodactylidae  Puerto Rico  
  14. By: Henricksen, H. C.
    Publication info: Porto Rico Agricultural Experiment Station,1930.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Citrus fruits  Fruit-culture  Puerto Rico  
    BHL Collections: Expanding Access to Biodiversity Literature
  15. By: McClelland, T. B. (Thomas Brown),
    Publication info: Mayagüez, P.R. :Porto Rico Agricultural Experiment Station,1921.
    Holding Institution: University of Florida, George A. Smathers Libraries
    Subjects: Coffee  Diseases and pests  Leaf spots  Puerto Rico  
    BHL Collections: Expanding Access to Biodiversity Literature
  16. By: Little, Elbert L. (Elbert Luther), - Wadsworth, Frank H.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture, Forest Service,1964.
    Holding Institution: MBLWHOI Library
    Subjects: Puerto Rico  Trees  Virgin Islands of the United States  
  17. By: Kepler, Angela Kay,
    Publication info: Cambridge, Mass. :Nuttall Ornithological Club,1977.
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
    Subjects: Birds  Puerto Rican tody  Puerto Rico  Todidae
  18. By: Hill, Robert Thomas,
    Publication info: New York,Century.,1898.
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    Subjects: Cuba  Description and travel  Puerto Rico  West Indies  
    BHL Collections: New York Botanical Garden
  19. By: Henricksen, Henrick Christian,
    Publication info: Washington:Imprenta del Gobierno,1907.
    Holding Institution: Library of Congress
    Subjects: Legumes  Puerto Rico  
    BHL Collections: Latino Natural History | Publicaciones en Español
  20. By: May, D. W. (David William),
    Publication info: Mayagüez, P.R. :Porto Rico Agricultural Experiment Station,1922.
    Holding Institution: University of Florida, George A. Smathers Libraries
    Subjects: Dairying  Puerto Rico  
    BHL Collections: Expanding Access to Biodiversity Literature
  21. By: Stejneger, Leonhard,
    Publication info: 1900
    Holding Institution: Smithsonian Institution Archives
    Subjects: Field notes  Herpetology  Ornithology  Puerto Rico  San Juan  
    BHL Collections: Smithsonian Field Books collection
  22. By: Gómez de la Maza, Manuel,
    Publication info: Habana :Impr. "La Antilla" de G. Cacho-Negrete,1889.
    Holding Institution: Missouri Botanical Garden, Peter H. Raven Library
    Subjects: Botany  Cuba  Dictionaries  Plant names, Popular  Plants  Puerto Rico  Spanish  
    BHL Collections: Latino Natural History | Publicaciones en Español
  23. By: Cook, O. F. (Orator Fuller), - Collins, G. N., (Guy N.
    Publication info: Washington,Govt. Print Off.,1903.
    Holding Institution: Smithsonian Libraries
    Subjects: Botany  Botany, Economic  Puerto Rico  
  24. By: McClelland, T. B. (Thomas Brown),
    Publication info: Mayagüez, P.R. :Porto Rico Agricultural Experiment Station,1928.
    Holding Institution: University of Florida, George A. Smathers Libraries
    Subjects: Coffee  Pruning  Puerto Rico  
    BHL Collections: Expanding Access to Biodiversity Literature
  25. By: United States. Forest Service. - Robinson, Andrew F.
    Edition: Rev.
    Publication info: [Washington] :U.S. Dept. of Agriculture, Forest Service :1980.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Puerto Rico  Rare animals  Rare plants  Southern States  United States Virgin Islands  
  26. By: Robinson, Andrew F. - United States. Forest Service.
    Edition: Rev. ed. --
    Publication info: [Washington, D.C.? :U.S. Forest Service],1982-
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Puerto Rico  Rare animals  Rare plants  Southern States  Virgin Islands of the United States  
  27. By: Stahl, A. (Agustín),
    Publication info: [San Juan?] :Tip. de El Asimilista,1883-1888.
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    Subjects: Plants  Puerto Rico  
    BHL Collections: Latino Natural History | Publicaciones en Español
  28. By: Fosberg, F. Raymond, Francis Raymond
    Publication info: 1963
    Holding Institution: Smithsonian Institution Archives
    Subjects: Borneo  Botany  Brunei Darussalam  Connecticut  Field notes  Massachusetts  New York  Pennsylvania  Puerto Rico  Singapore  United States  Virginia  
    BHL Collections: Smithsonian Field Books collection
  29. By: Crosse, Hippolyte,
    Publication info: Paris :H. Crosse,1892.
    Holding Institution: Smithsonian Libraries
    Subjects: Mollusks  Puerto Rico  
  30. By: Howard, Richard A
    Publication info: [1966-1968]
    Holding Institution: Harvard University Botany Libraries
    Subjects: Florida  Maryland  Massachusetts  New Hampshire  Ohio  Plants  Puerto Rico  Saint Kitts  Saint Kitts and Nevis
  31. By: Howard, Richard A
    Publication info: [1961-1966]
    Holding Institution: Harvard University Botany Libraries
    Subjects: Hawaii  Massachusetts  Plants  Puerto Rico  West Indies
  32. By: Howard, Richard A. (Richard Alden),
    Holding Institution: Harvard University Botany Libraries
    Subjects: Alabama  Dominican Republic  Florida  Maine  Plants  Puerto Rico  Roque Island  
  33. By: Schubert, Bernice,
    Holding Institution: Harvard University Botany Libraries
    Subjects: Plants  Puerto Rico  
    BHL Collections: BHL Field Notes Project
  34. By: Wetmore, Alexander,
    Publication info: 1911-1918
    Holding Institution: Smithsonian Institution Archives
    Subjects: Field notes  Kansas  Lawrence  Ornithology  Puerto Rico  United States  
    BHL Collections: Smithsonian Field Books collection
  35. By: United States. Forest Service. - Pinchot, Gifford, - Smith, George Otis, - Marshall, R. B. (Robert Bradford),
    Publication info: [Washington, D.C.] :U.S. Department of Agriculture, Forest Service,[1908]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Forest reserves  Luquillo Experimental Forest  Luquillo Experimental Forest (P.R.)  Maps  National parks and reserves  Puerto Rico  
  36. By: Murphy, Louis Sutliffe. - Puerto Rico. Board of Commissioners of Agriculture.
    Publication info: Washington,Govt. print. off.,1916.
    Holding Institution: Library of Congress
    Subjects: Forests and forestry  Puerto Rico  
  37. By: Murphy, Louis S. (Louis Sutliffe), - Puerto Rico. Board of Commissioners of Agriculture.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1916.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Forests and forestry  Puerto Rico
  38. By: Vaughan, Thomas Wayland,
    Publication info: Washington :Govt. Print. Off.,1919.
    Holding Institution: Smithsonian Libraries
    Subjects: Central America  Coral reefs and islands  Corals, Fossil  Cuba  Paleontology  Puerto Rico  
  39. By: Vaughan, Thomas Wayland,
    Publication info: [between 1903 and 1910].
    Holding Institution: Smithsonian Libraries
    Subjects: Antilles, Lesser  Corals, Fossil  Paleontology  Puerto Rico  
  40. By: Miller, Gerrit S. (Gerrit Smith),
    Publication info: 1932-1937
    Holding Institution: Smithsonian Institution Archives
    Subjects: Botany  Field notes  Florida  Panama  Perlas, Archipiélago de las  Puerto Rico  Sketches  United States  
    BHL Collections: Smithsonian Field Books collection
  41. By: Berkey, Charles Peter,
    Publication info: New York :New York Academy of Sciences,1915.
    Holding Institution: Wellesley College Library (archive.org)
    Subjects: Geology  Puerto Rico  
  42. By: Wm. C. Geraty Co. - Henry G. Gilbert Nursery and Seed Trade Catalog Collection.
    Publication info: Young's Island, S.C. :Wm. C. Geraty Co.,[1921]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Cabbage  Catalogs  Nursery stock  Puerto Rico  South Carolina  Sweet potatoes  Tomatoes  Vegetables  
    BHL Collections: Seed & Nursery Catalogs
  43. By: Stejneger, Leonhard,
    Publication info: Washington:U.S. Government Printing Office,1904.
    Holding Institution: Smithsonian Libraries
    Subjects: Amphibians  Puerto Rico  Reptiles  
  44. By: Francis, John K.
    Publication info: Institute of Tropical Forestry, U.S. Dept. of Agriculture, Forest Service, Southern Forest Experiment Station,1991]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Euphorbiaceae  Puerto Rico  
  45. By: Anthony, H. E. (Harold Elmer), 1890-1970.
    Publication info: [New York] 1918
    Holding Institution: American Museum of Natural History Library
    Subjects: Mammals  Mammals, Fossil  Paleontology  Puerto Rico  
  46. By: Jones, Thomas Henry,
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1915.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Diseases and pests  Insect pests  Puerto Rico  Vegetables
  47. By: Association of sugar producers of Puerto Rico. Experiment station, Rio Piedras.
    Edition: [English ed.]
    Publication info: [San Juan]The Times publishing co.,1912.
    Holding Institution: Cornell University Library
    Subjects: Irrigation  Puerto Rico  Sugar growing  
  48. By: Puerto Rico. Dept. of Natural Resources. - United States. Office of Ocean and Coastal Resource Management. Sanctuary Programs Division.
    Publication info: Washington, D.C. :U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Office of Ocean and Coastal Resource Management, Sanctuary Programs Division ;[1983]
    Holding Institution: Penn State University (archive.org)
    Subjects: Estuarine area conservation  Estuarine ecology  Estuarine reserves  Jobos Bay  Jobos Bay National Estuarine Research Reserve (P.R  Puerto Rico
  49. By: Blackwelder, Richard E.
    Publication info: 1935
    Holding Institution: Smithsonian Institution Archives
    Subjects: Beetles  Ciales  Diary  Entomology  Field notes  Grande-Terre  Guadeloupe  La Brea  Maps  Puerto Rico  Saint Thomas  Sans Souci  Trinidad  Trinidad and Tobago  
    BHL Collections: Smithsonian Field Books collection
  50. By: Blackwelder, Richard E.
    Publication info: 1936-1937
    Holding Institution: Smithsonian Institution Archives
    Subjects: Beetles  Diary  El Yunque  Entomology  Field notes  Jamaica  Maps  Puerto Rico  Saint Croix  Virgin Islands of the United States  
    BHL Collections: Smithsonian Field Books collection
  51. By: Puerto Rico. Board of Commissioners of Agriculture.
    Publication info: San Juan :[Board of Commissioners of Agriculture,1917].
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    Subjects: Agriculture  Periodicals  Puerto Rico  
    BHL Collections: New York Botanical Garden
  52. By: Puerto Rico. Department of Agriculture and Labor. - Puerto Rico. Department of Agriculture. - Puerto Rico. Department of Agriculture and Commerce.
    Publication info: San Juan, P.R. :Dept. of Agriculture and Labor,1917-1933.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Agriculture  Botany  Experimentation  Periodicals  Puerto Rico  
  53. By: Pregill, Gregory K.
    Publication info: Lawrence :The University of Kansas,1981.
    Holding Institution: Smithsonian Libraries
    Subjects: Geology, Stratigraphic  Paleontology  Pleistocene  Puerto Rico  Vertebrates, Fossil
  54. By: Perkins, Janet R. (Janet Russell),
    Publication info: Washington,Govt. print. off.,1907.
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    Subjects: Leguminosae  Puerto Rico  
    BHL Collections: New York Botanical Garden
  55. By: Gifford, John C. (John Clayton),
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture, Bureau of Forestry,1905.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Forest reserves  Luquillo Forest Reserve (P.R.)  Puerto Rico  
  56. By: Kinman, Charles Franklin,
    Publication info: Washington,Govt. print. off.,1918.
    Holding Institution: Library of Congress
    Subjects: Mango  Puerto Rico  
    BHL Collections: Expanding Access to Biodiversity Literature
  57. By: Chase, Agnes,
    Publication info: 1924-1941
    Holding Institution: Smithsonian Institution Archives
    Subjects: Botanists  Botany  Brazil  Correspondence  Field notes  Grasses  Puerto Rico  Research notes
    BHL Collections: Smithsonian Field Books collection
  58. By: Tower, Winthrop Vose
    Publication info: Washington :Govt. Print. Off.,1921.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Mosquitoes  Mosquitoes as carriers of disease  Puerto Rico  
  59. By: Geary, T. F.
    Publication info: Institute of Tropical Forestry,1972.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Control  Pine  Pinus caribaea  Puerto Rico  Trees  Weed control  Weeds  
  60. By: Ponce de Leon, Patricio.
    Publication info: Chicago, Ill. :Field Museum of Natural History,1969.
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Botany  Brazil  Morganella albina  Puerto Rico  
  61. By: Hall, E. Raymond (Eugene Raymond), - Tamsitt, J. R. - Royal Ontario Museum.
    Publication info: Toronto :Royal Ontario Museum,c1968.
    Holding Institution: Royal Ontario Museum (archive.org)
    Subjects: Mammals  Puerto Rico  Stenoderma rufum  
  62. By: Hill, Robert Thomas,
    Publication info: Washington, D.C. :Dept. of Agriculture, Forestry Division,1899.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Forests and forestry  Puerto Rico  
  63. By: United States. Bureau of Fisheries
    Publication info: 1898-1899
    Holding Institution: Smithsonian Institution Archives
    Subjects: Field notes  Fish Hawk (Steamer)  Ichthyology  Logbooks  Marine biology  Marine invertebrates  Mayag¸ez, BahÌa de  Narragansett Bay  Puerto Rico  Rhode Island  United States  
    BHL Collections: Smithsonian Field Books collection
  64. By: Van Volkenberg, H. L. (Horatio Luther),
    Publication info: Mayagüez, P.R. :Puerto Rico Agricultural Experiment Station,1934.
    Holding Institution: University of Florida, George A. Smathers Libraries
    Subjects: Cattle  Parasites  Puerto Rico  
    BHL Collections: Expanding Access to Biodiversity Literature
  65. By: Van Volkenberg, H. L. (Horatio Luther),
    Publication info: Puerto Rico Agricultural Experiment Station,1935.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Horses  Parasites  Puerto Rico  
    BHL Collections: Expanding Access to Biodiversity Literature
  66. By: Van Volkenberg, H. L. (Horatio Luther),
    Publication info: Mayagüez, P.R. :Puerto Rico Agricultural Experiment Station,1936.
    Holding Institution: University of Florida, George A. Smathers Libraries
    Subjects: Parasites  Puerto Rico  Swine  
    BHL Collections: Expanding Access to Biodiversity Literature
  67. By: Blackwelder, Richard E.
    Publication info: 1935-1937
    Holding Institution: Smithsonian Institution Archives
    Subjects: Barbados  Black-and-white photographs  Blackwelder, Richard E  Carriacou  Dominican Republic  Entomology  Field notes  Grenada  Guadeloupe  Haiti  Jamaica  Martinique  Puerto Rico  Saint Lucia  Saint Thomas  Saint Vincent  Saint Vincent and the Grenadines  Trinidad and Tobago  
    BHL Collections: Smithsonian Field Books collection
  68. By: Henricksen, H. C. (Henrick Christian), - Iorns, M. J. (Martin J.)
    Publication info: Mayagüez, P.R. :Porto Rico Agricultural Experiment Station,1909.
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Fruit-culture  Pineapple  Puerto Rico  
  69. By: Henricksen, H. C. (Henrick Christian), - Iorns, M. J. (Martin J.)
    Publication info: Porto Rico Agricultural Experiment Station,1909.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Fruit-culture  Pineapple  Puerto Rico  
    BHL Collections: Expanding Access to Biodiversity Literature
  70. By: Schubert, Bernice,
    Holding Institution: Harvard University Botany Libraries
    Subjects: Costa Rica  Cuba  Panama  Plants  Puerto Rico  
    BHL Collections: BHL Field Notes Project
  71. By: Garber, Abraham Pascal, - Gray, Asa, - Eaton, Daniel Cady,
    Publication info: 1880?
    Holding Institution: Harvard University Botany Libraries
    Subjects: Correspondence  Plants  Puerto Rico
    BHL Collections: BHL Field Notes Project
  72. By: Phillips, Everett Franklin,
    Publication info: Porto Rico Agricultural Experiment Station,1914.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Bee culture  Puerto Rico  
  73. By: Wetmore, Alexander,
    Publication info: 1911-1912
    Holding Institution: Smithsonian Institution Archives
    Subjects: Account book  Field notes  Ornithology  Puerto Rico  Receipts (financial records)  United States Dept. of Agriculture  
    BHL Collections: Smithsonian Field Books collection
  74. By: Wetmore, Alexander,
    Publication info: 1912
    Holding Institution: Smithsonian Institution Archives
    Subjects: Aguadilla  Añasco  Bats  Coffee leafminer  Culebra, Isla de  Entomology  Field notes  Guanica  Lares  Mammalogy  Ornithology  Ponce  Puerto Rico  Quebradillas  United States Dept. of Agriculture  Vieques, Isla de  
    BHL Collections: Smithsonian Field Books collection
  75. By: Wetmore, Alexander,
    Publication info: 1912
    Holding Institution: Smithsonian Institution Archives
    Subjects: Bats  Culebrita, Isla  El Yunque  Fajardo  Field notes  Mammalogy  Ornithology  Ponce  Puerto Rico  Río Piedras  United States Dept. of Agriculture  
    BHL Collections: Smithsonian Field Books collection
  76. By: Wetmore, Alexander,
    Publication info: 1911-1912
    Holding Institution: Smithsonian Institution Archives
    Subjects: Aibonito  Bats  Caguas,  Fajardo  Field notes  Ornithology  Picúa, Punta  Puerto Rico  Rio Grande  Río Piedras  Trujillo Alto  United States Dept. of Agriculture  
    BHL Collections: Smithsonian Field Books collection
  77. By: Wetmore, Alexander,
    Publication info: 1912
    Holding Institution: Smithsonian Institution Archives
    Subjects: Ajuntas  Bats  Cabo Rojo  Coffee plantations  Field notes  Grande de Arecibo  Juana Diaz  Mammalogy  Manatí  Ornithology  Ponce  Puerto Rico  Tobacco  United States Dept. of Agriculture  Utuado  
    BHL Collections: Smithsonian Field Books collection
  78. By: Wetmore, Alexander,
    Publication info: 1911-1912
    Holding Institution: Smithsonian Institution Archives
    Subjects: Correspondence  Field notes  Herpetology  Mammalogy  Ornithology  Phyllophaga  Plague  Puerto Rico  Reptiles  United States Dept. of Agriculture  
    BHL Collections: Smithsonian Field Books collection
  79. By: Henricksen, H. C.
    Publication info: Washington, D.C. :G.P.O.,1904.
    Holding Institution: Library of Congress
    Subjects: Fruit-culture  Oranges  Puerto Rico  
    BHL Collections: Publicaciones en Español
  80. By: Woodbury, Roy O. - United States. Soil Conservation Service. - Puerto Rico. Dept. of Natural Resources.
    Publication info: [Washington] :U.S. Dept. of Agriculture, Soil Conservation Service in cooperation with the Department of Natural Resources, Commonwealth of Puerto Rico,1975.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Puerto Rico  Rare plants  
  81. By: Little, Elbert L. (Elbert Luther), - Woodbury, Roy O. - United States. Forest Service. - United States. Forest Service. - United States. Forest Service. Timber Management Research.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture, Forest Service :1980.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: British Virgin Islands  Puerto Rico  Rare plants  Trees  Virgin Islands of the United States
  82. By: Van Zwaluwenburg, R. H. (Reyer Herman), - Vidal, Rafael,
    Publication info: Washington :Govt. Print. Off.,1918.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Bees  Puerto Rico  
  83. By: Delgado, Patricia. - Stedman, Susan-Marie. - United States. National Marine Fisheries Service. Office of Habitat Conservation.
    Publication info: Silver Spring, MD :Administración Nacional de los Océanos y la Atmósfera (NOAA), Oficina de Pesquerías de NOAA, División de Conservación de Habitáculo,2004.
    Holding Institution: Penn State University (archive.org)
    Subjects: Fishes  Habitat  Puerto Rico  Virgin Islands of the United States  Wetland conservation  Wetland ecology  
    BHL Collections: Publicaciones en Español
  84. By: Rose, J N (Joseph Nelson)
    Publication info: 1912, 1919-1929
    Holding Institution: Smithsonian Institution Archives
    Subjects: Alabama  Arizona  Belgium  Botany  California  Chile  Cuba  Field notes  Germany  Guatemala  Mexico  Panama  Puerto Rico  South Carolina  Texas  United States  Wyoming  
    BHL Collections: Smithsonian Field Books collection
  85. By: Francis, John K.
    Publication info: Rio Piedras, PR :International Institute of Tropical Forestry, U.S. Dept. of Agriculture, Forest Service,1992
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Palms  Puerto Rico  
  86. By: Zerban, F. W.
    Publication info: [San Juan, Porto Rico]The Times Publishing Co.,1913.
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    Subjects: Marshes  Puerto Rico  Soils  
    BHL Collections: New York Botanical Garden
  87. By: New York Academy of Sciences.
    Publication info: New York, :The Academy,1919-60.
    Holding Institution: University of Michigan (archive.org)
    Subjects: Puerto Rico  Scientific Expeditions  Virgin Islands of the United States  
  88. By: Schmitt, Waldo L. (Waldo Lasalle),
    Publication info: 1956
    Holding Institution: Smithsonian Institution Archives
    Subjects: Antigua  Barbados  Caribbean Sea  Field notes  Grenadine Islands  Martinique  Puerto Rico  Slides (photographs)  Smithsonian-Bredin Caribbean Expeditions (1956-195  Trinidad  Zoology  
    BHL Collections: Smithsonian Field Books collection
  89. By: Schmitt, Waldo L. (Waldo Lasalle),
    Publication info: 1937
    Holding Institution: Smithsonian Institution Archives
    Subjects: Correspondence  Crustaceans  Cuba  Field notes  Hartford-Smithsonian West Indies Expedition (1937)  Mineralogy  Puerto Rico  Saint Thomas  San Juan  Virgin Islands  West Indies  Zoology  
    BHL Collections: Smithsonian Field Books collection
  90. By: Schmitt, Waldo L. (Waldo Lasalle),
    Publication info: 1937
    Holding Institution: Smithsonian Institution Archives
    Subjects: Barbados  Diary  Field notes  Hartford-Smithsonian West Indies Expedition (1937)  Puerto Rico  Saint Pierre and Miquelon  Saint Thomas  Virgin Islands  West Indies  Zoology  
    BHL Collections: Smithsonian Field Books collection
  91. By: Theis, Thomas.
    Publication info: Federal Experiment Station of the United States Dept. of Agriculture,1953.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Diseases and pests  Forage plants  Puerto Rico  
    BHL Collections: Expanding Access to Biodiversity Literature
  92. By: Young, Esther.
    Publication info: 1915.
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: 1915  Botany  Cercospora  Fungi  Phyllosticta  Puerto Rico  Theses  UIUC  
  93. By: Tower, Winthrop Vose - Tower, Winthrop Vose. - Porto Rico Agricultural Experiment Station.
    Publication info: Mayaguez,Mayaguez Print. Co.,1912.
    Holding Institution: Multiple institutions
    Subjects: Mosquitoes  Puerto Rico  San Juan  
  94. By: Davis, R. L. (Robert Lesley),
    Publication info: Mayagüez, P.R. :Puerto Rico Agricultural Experiment Station,1934.
    Holding Institution: University of Florida, George A. Smathers Libraries
    Subjects: Puerto Rico  Sugarcane  Varieties  
    BHL Collections: Expanding Access to Biodiversity Literature
  95. By: Cook, O. F. (Orator Fuller),
    Publication info: New York,1901
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    Subjects: Palmae  Puerto Rico  
    BHL Collections: New York Botanical Garden
  96. By: Cruz, Jorge de la. - Tamsitt, J. R. - Valdivieso, Dario, - Royal Ontario Museum.
    Publication info: Toronto :Royal Ontario Museum,c1974.
    Holding Institution: Royal Ontario Museum (archive.org)
    Subjects: Bats  Listrophoridae  Mites  Parasites  Puerto Rico  
  97. By: Van Leenhoff, J. W. (Johannes W.)
    Publication info: Porto Rico Agricultural Experiment Station,1905.
    Holding Institution: Multiple institutions
    Subjects: Field experiments  Puerto Rico  Tobacco  
    BHL Collections: Expanding Access to Biodiversity Literature
  98. By: Hennefrund, Helen E. - United States. Office of Experiment Stations.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture, Bureau of Agricultural Economics,1940.
    Holding Institution: University of Florida, George A. Smathers Libraries
    Subjects: Bibliography  Cuba  Puerto Rico  Tomato industry  
    BHL Collections: Expanding Access to Biodiversity Literature
  99. By: Hill, R. G. (Robert George), - Hawkins, Lon A.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1924.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Citrus fruits  Puerto Rico  Transportation
  100. By: Fernández y Jiménez, José María.
    Publication info: Habana :Liga Agraria,1905.
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    Subjects: Cuba  Puerto Rico  Trees  
    BHL Collections: Latino Natural History | New York Botanical Garden | Publicaciones en Español
  101. By: Fernández y Jiménez, José María.
    Publication info: Habana :Impr. y taller de encuadernacion "La Fortuna",1867.
    Holding Institution: National Library of Medicine (archive.org)
    Subjects: Cuba  Puerto Rico  Trees  
    BHL Collections: Publicaciones en Español
  102. By: Briscoe, C. B.
    Publication info: Rio Piedras, Puerto Rico :Institute of Tropical Forestry,[1962]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Growth  Puerto Rico  Trees  
  103. By: United States. Forest Service. - United States. Forest Service. Southern Region. - Puerto Rico. Department of Natural Resources.
    Publication info: Atlanta, Ga. ;U.S. Dept. of Agriculture, Forest Service, Southern Region,1995.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Caribbean Area  Handbooks, manuals, etc  Puerto Rico  Tree planting  Trees  
  104. By: Geary, T. F. - Briscoe, C. B.
    Publication info: Rio Piedras, P.R. :Institute of Tropical Forestry ;1972.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Forests and forestry  Puerto Rico  Trees  
  105. By: Little, Elbert L. (Elbert Luther), - Institute of Tropical Forestry (Río Piedras, San Juan, P.R.)
    Publication info: Rio Piedras, P.R. :Institute of Tropical Forestry, Forest Service, U.S. Dept. of Agriculture,1976.
    Holding Institution: Smithsonian Libraries
    Subjects: Puerto Rico  Trees  
  106. By: McClelland, T. B. (Thomas Brown),
    Publication info: Mayagüez, P.R. :Porto Rico Agricultural Experiment Station,1919.
    Holding Institution: University of Florida, George A. Smathers Libraries
    Subjects: Puerto Rico  Vanilla  Vanilla industry  
    BHL Collections: Expanding Access to Biodiversity Literature
  107. By: Britton, Nathaniel Lord,
    Publication info: St Louis,1915.
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    Subjects: Mona Island  Plants  Puerto Rico  
    BHL Collections: New York Botanical Garden
  108. By: Ledru, André Pierre,
    Publication info: Puerto-RicoJ. Gonzalez1863
    Holding Institution: University of Toronto - Robarts Library
    Subjects: Description and travel  History  Natural history  Puerto Rico  
    BHL Collections: Publicaciones en Español
  109. By: Kinman, C. F. (Charles Franklin),
    Publication info: Mayagüez, P.R. :Porto Rico Agricultural Experiment Station,1921.
    Holding Institution: University of Florida, George A. Smathers Libraries
    Subjects: Puerto Rico  Yams  
    BHL Collections: Expanding Access to Biodiversity Literature
  1. By: Soto-Adames, Felipe - Taylor, Steven
    Type: Article
    In: ZooKeys
    Volume: 323
    Date: 2013
    Page Range: 35-74
    Publication info: Pensoft Publishers 2013
    Subjects: cave-adaptive characters  Dicranocentruga  Phylogeny  Puerto Rico
  2. By: Konstantinov, Alexander - Konstantinova, Anna
    Type: Article
    In: ZooKeys
    Volume: 155
    Date: 2011
    Page Range: 61-87
    Publication info: Pensoft Publishers 2011
    Subjects: leaf beetles  Moss  Puerto Rico  Species diversity  West Indies
  3. By: Morales Núñez, Andres - Heard, Richard W.
    Type: Article
    In: ZooKeys
    Volume: 397
    Date: 2014
    Page Range: 49-70
    Publication info: Pensoft Publishers 2014
    Subjects: Caribbean  new species  Paratanais  Puerto Rico  Tanaidomorpha
  4. By: Franz, Nico
    Type: Article
    In: ZooKeys
    Volume: 49
    Date: 2010
    Page Range: 33-75
    Publication info: Pensoft Publishers 2010
    Subjects: Cladistics  Colonization  Dominican Republic  endemism  historical biogeography  Mona Island  new species  Puerto Rico  taxonomy  weevils