The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1915)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1916)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1917)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1918)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1919)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1921)

Proceedings of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 1958)

Proceedings of the Oklahoma Academy of Science - Oklahoma Academy of Science (Oklahoma Academy of Science, 1921)

Proceedings of the Rochester Academy of Science - Rochester Academy of Science. (The Academy, 1894)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1882)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1890)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1894)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1913)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1922)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1927)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1932)

Proceedings of the Zoological and Acclimatisation Society of Victoria, and report of the annual meeting of the society - Zoological; Acclimatisation Society of Victoria. (F. A. Masterman, 1872)

Proceedings, Symposium on Cheatgrass Invasion, Shrub Die-off and Other Aspects of Shrub Biology and Management : Las Vegas, NV, April 5-7, 1989 - Intermountain Research Station (Ogden, Utah) (Intermountain Research Station, Forest Service, U.S. Dept. of Agriculture, 1990)

Proceedings–Symposium on Shrub Ecophysiology and Biotechnology, Logan, Utah, June 30-July 2, 1987 - Intermountain Research Station (Ogden, Utah) (Intermountain Research Station, Forest Service, U.S. Dept. of Agriculture, 1989)

Procès-verbaux - Société Linnéenne de Bordeaux. (1933)

Prodromus systematis naturalis regni vegetabilis, sive, Enumeratio contracta ordinum generum specierumque plantarum huc usque cognitarium, juxta methodi naturalis, normas digesta - Candolle, Augustin Pyramus de, 1778 -1841 (Sumptibus Sociorum Treuttel et Würtz, 1864)

The Production of lumber in 1913 - United States. Office of Industrial Investigations. (U.S. Dept. of Agriculture, 1915)

Production of lumber, lath, and shingles in 1915 and lumber in 1914 - Nellis, J. C. (Jesse Charles), 1885 - (U.S. Dept. of Agriculture, 1917)

Production of lumber, lath, and shingles in 1917 - Smith, Franklin H. (Franklin Howard), 1877 - (U.S. Dept. of Agriculture, 1919)

Production of lumber, lath, and shingles in 1918 - Smith, Franklin H. (Franklin Howard), 1877 - (U.S. Dept. of Agriculture, 1920)

Programmatic environmental impact statement vegetation treatments using herbicides on Bureau of Land Management lands in 17 western states : draft - United States. Bureau of Land Management. (U.S. Dept. of the Interior, Bureau of Land Management, 2005)

Programmatic environmental impact statement vegetation treatments using herbicides on Bureau of Land Management lands in 17 western states : final - United States. Bureau of Land Management. (U.S. Dept. of the Interior, Bureau of Land Management, 2007)

Progress report on pesticides and related activities - United States. Department of Agriculture. (1967)

ProHort - Center for Urban Horticulture (1986)

ProHort - Center for Urban Horticulture (1987)

Propagation of forest trees having commercial value and adapted to Pennsylvania - Pennsylvania. Department of Forest; Waters. (W. S. Ray, state printer, 1902)

A provisional host-index of the fungi of the United States - Farlow, W. G. (William Gilson), 1844 -1919 (1888)

A provisional host-index of the fungi of the United States - Farlow, W. G. (William Gilson), 1844 -1919 (1890)

A provisional host-index of the fungi of the United States - Farlow, W. G. (William Gilson), 1844 -1919 (1891)

A provisional list of the parasitic fungi of Wisconsin - Davis, John Jefferson. (1914)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1888)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1889)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1894)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1896)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1900)

Publication. Field Columbian Museum. Botanical series - Field Columbian Museum. (Field Columbian Museum, 1896)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1940)

The publications of the Pennsylvania chestnut tree blight commission, 1911-1913 - Pennsylvania. Chestnut Tree Blight Commission. (W. S. Ray, state printer, 1915)

Puissance du Canada : les forêts du Canada et leurs produits - Small, H. Beaumont (Henry Beaumont), 1832 -1919 ([publisher not identified], 1885)

The Quarterly journal of science (J. Churchill and Sons, etc, 1865)

The Queensland Naturalist - Queensland Naturalists' Club. (Queensland Naturalists' Club], 1936)

Random notes on natural history (Southwick & Jencks, 1885)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1980)

Rare and endangered vascular plant species in Massachusetts : as abridged from Coddington and Field, 1978 - Massachusetts. Dept. of Environmental Management. (Massachusetts Dept. of Environmental Management], 1979)

Rare native plants of Massachusetts - Massachusetts. Division of Fisheries; Wildlife. (Massachusetts Division of Fisheries and Wildlife, 1987)

Rare native plants of Massachusetts - Massachusetts. Division of Fisheries; Wildlife. (Division of Fisheries and Wildlife, 1989)

Rare native plants of Massachusetts - Massachusetts. Division of Fisheries; Wildlife. (Massachusetts Division of Fisheries and Wildlife, 1985)

Ravinia Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.D. Clavey & Sons, 1926)

Ravinia Nurseries [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.D. Clavey & Sons, 1927)

Recent distribution and life history information for bats of eastern South Dakota - Swier, Vicki J. (Museum of Texas Tech University, 2006)

A record of the fungi named by J.B. Ellis - United States. Bureau of Plant Industry, Soils,; Agricultural Engineering. (Division of Mycology and Disease Survey, Bureau of Plant Industry, Soils, and Agricultural Engineering, Agricultural Research Administration, U.S. Dept. of Agriculture, 1952)

Reduced herbivory on exotic buckthorn (Rhamnus cathartica) compared to native tree species in an Illinois woodland - Illinois. Natural History Survey Division (Illinois Natural History Survey, 2012)

The relation of forests to farms - Fernow, B. E. (Bernhard Eduard), 1851 -1923 (Government Printing Office, 1896)

Relative resistance of various hardwoods to injection with creosote - Teesdale, Clyde Harry. (U.S. Dept. of Agriculture, 1918)

Reliably hardy evergreens for fall planting : autumn 1915 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (New England Nurseries, 1915)

Reliably hardy evergreens for fall planting : autumn 1916 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (New England Nurseries, 1916)

Repertorium annuum literaturae botanicae periodicae - Bemmelen, J. A. van. (Erven Loosjes, 1873)

Report intended to illustrate a map of the hydrographical basin of the upper Mississippi river - Torrey, John, 1796 -1873 (Blair and Rives, printers, 1843)

Report of plant materials field plantings in Minnesota - United States. Soil Conservation Service. (The Service, 1986)

Report of plant materials field plantings in North Dakota - United States. Soil Conservation Service. (The Service, 1986)

Report of plant materials field plantings in South Dakota - United States. Soil Conservation Service. (Soil Conservation Service, 1986)

Report of the Botanist - Peck, Charles H. (Charles Horton), 1833 -1917 (University of the State of New York, Office of the Regents, 1868)

Report of the Botanist - New York (State). State Botanist. (James B. Lyon, State Printer, 1867)

Report of the Botanist - Peck, Charles H. (Charles Horton), 1833 -1917 (University of the State of New York, Office of the Regents, 1878)

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Report of the Fruit Growers' Association of Ontario for the year .... Report of the Entomological Society of Ontario for the year ... - Entomological Society of Ontario. (The Association, 1883)

Report of the Geological Survey of Ohio - Geological Survey of Ohio. (Nevins & Myers, state printers, 1874)

Report of the Geological Survey of Ohio - Geological Survey of Ohio. (Nevins & Myers, state printers, 1878)

Report of the Geological Survey of Ohio - Geological Survey of Ohio. (Nevins & Myers, state printers, 1893)

Report of the geological survey of Ohio - Geological Survey of Ohio. (Nevins & Meyers, 1893)

Report of the geological survey of Ohio - Geological Survey of Ohio. (Nevins & Meyers, 1878)

Report of the Illinois Horticultural Board of Control having in charge the fruit exhibit of the State in the national horticultural building at the World's Columbian Exposition, Chicago, Ill., U. S. A., 1893 - World's Columbian Exposition Chicago, Ill.) 1893 - ([The Board, 1893)

Report of the Michigan Academy of Science - Michigan Academy of Science. Council. (The Academy, 1904)

Report of the Michigan Academy of Science - Michigan Academy of Science. Council. (The Academy, 1911)

Report of the Michigan Academy of Science - Michigan Academy of Science. Council. (The Academy, 1912)

Report of the Michigan Academy of Science - Michigan Academy of Science. Council. (The Academy, 1913)

Report of the Michigan Academy of Science - Michigan Academy of Science. Council. (The Academy, 1914)

Report of the Northern Great Plains Field Station for the 10-year period, 1913-1922, inclusive - Stephens, John Morman, 1879 - (U.S. Dept. of Agriculture, 1925)

Report of the State Botanist - Peck, Charles H. (Charles Horton), 1833 -1917 (University of the State of New York, 1896)

Report of the State Botanist - Peck, Charles H. (Charles Horton), 1833 -1917 (University of the State of New York, 1901)

Report of the State Botanist - Peck, Charles H. (Charles Horton), 1833 -1917 (University of the State of New York, 1909)

Report of the State Botanist - Peck, Charles H. (Charles Horton), 1833 -1917 (University of the State of New York, 1916)

Report of the state botanist for 1924 - New York (State). Botanist. (University of the State of New York, 1925)

Report of the State Entomologist on injurious and other insects of the state of New York - Felt, Ephraim Porter, 1868 -1943 (Weed, Parsons and Co.; University of the State of New York, 1891)

Report of the State Entomologist on injurious and other insects of the state of New York - Felt, Ephraim Porter, 1868 -1943 (Weed, Parsons and Co.; University of the State of New York, 1907)

Report of the State Entomologist on injurious and other insects of the state of New York - Felt, Ephraim Porter, 1868 -1943 (Weed, Parsons and Co.; University of the State of New York, 1917)

Report of the State Entomologist on the noxious and beneficial insects of the state of Illinois - Illinois State Entomologist. (State Entomologist, 1878)

Report of the State Entomologist on the noxious and beneficial insects of the state of Illinois - Illinois State Entomologist. (State Entomologist, 1883)

Report of the State Entomologist on the noxious and beneficial insects of the state of Illinois - Illinois State Entomologist. (State Entomologist, 1882)

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Report of the State highway commission on the Iowa lakes and lake beds - Iowa. Highway Commission. (Pub. by the state of Iowa, 1917)

Report of the United States Geological Survey of the territories - Lesquereux, Léo, 1806 -1889 (Govt. Print. Off, 1873)

Report on botanical work in Minnesota for the year 1886 - Arthur, Joseph Charles, 1850 -1942 (Pioneer Press Co, 1887)

Report on forests and forestry - Warder, J. A. (John Aston), 1812 -1883 (G.p.o, 1875)

Report on the botany of Barren and Edmonson counties - Hussey, John. 1831 -1888 (1876)

Report on the flora of western and southern Texas - Havard, Valery, 1846 -1927 (1885)

Report on the forest conditions of the Rocky Mountains, and other papers; with a map showing the location of forest areas on the Rocky Mountain range - United States. Department of Agriculture. (Govt. Print. Off, 1889)

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Report on the forest wealth of Canada - Johnson, George, 1837 -1911 (S.E. Dawson, 1895)

Report on the forests of North America, exclusive of Mexico - Sargent, Charles Sprague, 1841 -1927 (Govt. Print. Off, 1884)

Report on the forests of North America (exclusive of Mexico) - Sargent, Charles Sprague, 1841 -1927 (Govt. print. off, 1884)

Report on the forests of North America (exclusive of Mexico) - Sargent, Charles Sprague, 1841 -1927 (G.P.O, 1884)