Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean - Baird, Spencer Fullerton, 1823 -1887 (A.O.P. Nicholson, Printer [etc.], 1858)

Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean - Baird, Spencer Fullerton, 1823 -1887 (A.O.P. Nicholson, Printer [etc.], 1853)

Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean - Baird, Spencer Fullerton, 1823 -1887 (A.O.P. Nicholson, Printer [etc.], 1859)

Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean - Baird, Spencer Fullerton, 1823 -1887 (A.O.P. Nicholson, Printer [etc.], 1860)

The resources of California: comprising agriculture, mining, geography, climate, commerce, &c., and the past and future development of the State - Hittell, John S. (John Shertzer), 1825 -1901 (A. Roman, 1866)

Results of a biological reconnoissance of south-central Idaho - Stejneger, Leonhard, 1851 -1943 (Govt. Print. Off, 1891)

Results of a biological survey of Mount Shasta, California - Merriam, C. Hart (Clinton Hart), 1855 -1942 (Govt Print. Off, 1899)

Returns from banded birds, 1920 to 1923 - United States. Department of Agriculture. (U.S. Dept. of Agriculture, 1924)

The Review of applied entomology Series A Agricultural - C.A.B. International. Bureau of Crop Protection (Commonwealth Agricultural Bureaux, etc, 1919)

A revised catalogue of the birds of Kansas : with descriptive notes of the nests and eggs of the birds known to breed in the state - Goss, N. S. (Nathaniel S.) (Kansas Publishing House, 1886)

A revised catalogue of the birds of Kansas. With descriptive notes of the nests and eggs of the birds known to breed in the state - Goss, N. S. (Nathaniel S.) (Kansas Publishing House, 1886)

Revised land and resource management plan, Ouachita National Forest, Arkansas and Oklahoma - United States. Forest Service. Southern Region. (U.S. Dept. of Agriculture, Forest Service, Southern Region, 2005)

Revised list of birds of Central New York - Rathbun, Frank R., (Harvard local name) (Daily Advertiser and Weekly Journal Book and Job Printing House, 1879)

A revised list of Cincinnati birds - Langdon, Frank Warren, 1852 -1933 (Barclay, 1879)

A revised list of the birds of Brookline, Massachusetts - Howe, Reginald Heber, Jr. 1875 -1932 (1902)

Revista do Museu Paulista - Museu Paulista (Museu Paulista, 1898)

Revista do Museu Paulista - Museu Paulista (Museu Paulista, 1902)

Revista do Museu Paulista - Museu Paulista (Museu Paulista, 1904)

Revista do Museu Paulista - Museu Paulista (O Museu, 1936)

Revista do Museu Paulista - Museu Paulista (O Museu, 1938)

Revista do Museu Paulista - Museu Paulista (Museu Paulista, 1920)

Revue des sciences naturelles appliquées - Société nationale d'acclimatation de France (La Société, 1889)

Revue et magasin de zoologie pure et appliquée - Société Cuvierienne. (Bureau de la Revue et Magasin de Zoologie, 1849)

Revue française d'ornithologie - Société ornithologique et mammalogique de France. (L. Denise, 1909)

The Riverside natural history - Kingsley, J. S. (John Sterling), 1854 -1929 (Houghton, Mifflin and company, 1888)

Rivista italiana di ornitologia - Museo civico di storia naturale di Milano. (Società italiana di scienze naturali, 1913)

The romance of animal arts and crafts : being an interesting account of the spinning, weaving, sewing manufacture of paper and pottery, aeronautics, raft-building, road-making, and various other industries of wild life - Coupin, Henri, 1868 -1937 (J.B. Lippincott Company, 1907)

Roosevelt wild life bulletin ... of the Roosevelt Life Forest Experiment Station of the New York College of Forestry at Syracuse University - New York State College of Forestry at Syracuse University. Roosevelt Wild Life Forest Experiment Station. (The University, 1921)

Roosevelt wild life bulletin ... of the Roosevelt Life Forest Experiment Station of the New York College of Forestry at Syracuse University - New York State College of Forestry at Syracuse University. Roosevelt Wild Life Forest Experiment Station. (The University, 1923)

Roosevelt wild life bulletin ... of the Roosevelt Life Forest Experiment Station of the New York College of Forestry at Syracuse University - New York State College of Forestry at Syracuse University. Roosevelt Wild Life Forest Experiment Station. (The University, 1935)

The royal natural history - Lydekker, Richard, 1849 -1915 (Frederick Warne & Co, 1894)

The royal natural history - Lydekker, Richard, 1849 -1915 (Frederick Warne & Co, 1895)

The royal natural history - Lydekker, Richard, 1849 -1915 (F. Warne, 1893)

The royal natural history - Lydekker, Richard, 1849 -1915 (F. Warne, 1894)

The Salton Sea : geology, history, potential problems, politics, and possible futures of an unnatural desert salt lake - Oglesby, Larry C. (Southern California Academy of Sciences, 2005)

Schweizerische Blätter für Ornithologie : Geflügel-Tauben- und Kaninchenzucht - Schweizerischer Geflügelzucht-Verein. (Schweizerischer Geflügelzucht-Verein, 1906)

Science - American Association for the Advancement of Science. ([s.n.], 1897)

Science bulletin - Brooklyn Museum. (Published by the MacMillan Co. for the Institute, 1913)

The second book of birds; bird families - Miller, Harriet Mann, 1831 -1918 (Houghton, Mifflin, 1901)

Selected vertebrate endangered species of the seacoast of the United States - Biological Services Program (U.S.) (The Service : [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1980)

Shasta-Trinity National Forests : draft environmental impact statement, land and resource management plan : Humboldt, Modoc, Shasta, Siskiyou, Tehama and Trinity Counties, California - United States. Forest Service. ([San Francisco, Calif.], 1993)

Signs and seasons - Burroughs, John, 1837 -1921 (Houghton Mifflin and company, 1914)

Signs and seasons - Burroughs, John, 1837 -1921 (Houghton, Mifflin and Company, 1901)

Sixth annual report of the United States geological survey of the Territories, embracing portions of Montana, Idaho, Wyoming, and Utah : being a report of progress of the explorations for the year 1872 - Geological; Geographical Survey of the Territories (U.S.) (G.P.O, 1873)

Sketch of the North-West of America (Printed by J. Lovell, 1870)

Smithsonian contributions to knowledge - Smithsonian Institution (Smithsonian Institution, 1895)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1859)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1880)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1881)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1882)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1921)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1951)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1957)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1961)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1968)

Snag habitat management : proceedings of the symposium, June 7-9, 1983, Northern Arizona University, Flagstaff - Davis, Jerry W. (Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1983)

Some common birds in their relation to agriculture - Beal, F. E. L. (Foster Ellenborough Lascelles), 1840 -1916 (U.S. Dept. of Agriculture, 1897)

The South American herpetofauna : its origin, evolution, and dispersal - Herpetologists League. (Museum of Natural History, University of Kansas, 1979)

Special bulletin - Smithsonian Institution (Government Printing Office, 1892)

Special bulletin - Smithsonian Institution (Government Printing Office, 1895)

Species of special concern in Pennsylvania - Genoways, Hugh H. (Carnegie Museum of Natural History, 1985)

Species taxa of North American birds; a contribution to comparative systematics - Mayr, Ernst, 1904 -2005 (The Club, 1970)

Spixiana - Zoologische Staatssammlung München. (Zoologische Staatssammlung Mchen, 1999)

The sport of bird-study - Job, Herbert Keightley, 1864 -1933 (Macmillan, 1922)

Spring notes from Tennessee - Torrey, Bradford, 1843 -1912 (Houghton, Mifflin and company, 1896)

The standard catalogue of North American birds eggs - Lattin, Frank H (F.H. Lattin, 1892)

The standard natural history - Kingsley, J. S. (John Sterling), 1854 -1929 (S.E. Cassino and company, 1885)

State forest land management plan : draft environmental impact statement - Montana. Department of State Lands (The Dept, 1995)

State forest land management plan : final environmental impact statement - Montana. Department of Natural Resources; Conservation (Dept. of Natural Resources and Conservation, 1996)

The structure and classification of birds - Beddard, Frank E. (Frank Evers), 1858 -1925 (Longmans, Green, and co, 1898)

A student's text-book of zoology - Shipley, A. E. Sir, (Arthur Everett), 1861 -1927 (S. Sonnenschein and Co., ltd, 1905)

A student's text-book of zoology - Shipley, A. E. Sir, (Arthur Everett), 1861 -1927 (S. Sonnenschein and co, 1898)

A student's text-book of zoology - Shipley, A. E. Sir, (Arthur Everett), 1861 -1927 (S. Sonnenschein and Co., ltd, 1932)

Studies scientific & social / by Alfred Russel Wallace - Wallace, Alfred Russel, 1823 -1913 (Macmillan and co., limited, 1900)

A study of the incubation periods of birds; what determines their lengths - Bergtold, W. H. (William Harry), 1865 -1956 (The Kendrick-Bellamy co, 1917)

Summer birds of Greene County, Pennsylvania - Jacobs, Joseph Warren, 1868 -1947 (Republican book and job office, 1893)

A supplement to The birds of Rhode Island - Howe, Reginald Heber, Jr. 1875 -1932 ([s.n.], 1903)

A survey of natural areas in Brunswick County, North Carolina : for The North Carolina Natural Heritage Program, Coastal Natural Area Inventory Project - North Carolina. Coastal Energy Impact Program. (North Carolina Coastal Energy Impact Program, Office of Coastal Management, North Carolina Dept. of Natural Resources and Community Development, 1982)

Swan lake, Nicollet County, Minnesota as a breeding ground for waterfowl - Oberholser, Harry C. (Harry Church), 1870 -1963 (1918)

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1981)

Sylvan secrets in bird-songs and books - Thompson, Maurice, 1844 -1901 (J.B. Alden, 1887)

Sylvan secrets, in bird-songs and books - Thompson, Maurice, 1844 -1901 (J. B. Alden, 1887)

Synopsis avium : nouveau manuel d'ornithologie - Dubois, Alphonse, 1839 -1921. (H. Lamertin, 1902)

Synopsis avium : nouveau manuel d'ornithologie - Dubois, Alphonse, 1839 -1921. (H. Lamertin, 1904)

Synopsis of the contents of the British Museum - British Museum (Woodfall, 1842)

System of ophthalmology - Duke-Elder, Stewart, Sir, 1898 -1978 (Mosby, 1958)

Systematisches Verzeichniss der naturhistorischen Sammlung der Gesellschaft Museum Abt. 1 Vögel - Gesellschaft Museum (Bremen, Germany) (C. Schünemann, 1844)

Tableau synoptique de l'ornithologie du Canada classification et nomenclature du "Smithsonian Institution" de Washington - Smithsonian Institution (s.n.], 1864)

Taylor's standard American egg catalogue : comprising a directory of prominent oölogists and collectors' handbook : a correct basis for the exchange of nests and eggs arranged with margin for check-list - Taylor, Henry Reed, 1866 -1917 (H.R. Taylor, 1904)

Teachers' manual of bird-life : a guide to the study of our common birds - Allen, J. A. (Joel Asaph), 1838 -1921 (D. Appleton and Co, 1899)

The Texas journal of science - Texas Academy of Science. (Texas Academy of Science, 1952)

The Texas journal of science - Texas Academy of Science. (Texas Academy of Science, 1977)

The Texas journal of science - Texas Academy of Science. (Texas Academy of Science, 1981)

The Texas journal of science - Texas Academy of Science. (Texas Academy of Science, 1987)

The Texas journal of science - Texas Academy of Science. (Texas Academy of Science, 1997)

The Texas journal of science - Texas Academy of Science. (Texas Academy of Science, 2000)