Report on the birds of Pennsylvania : with special reference to the food habits, based on over three thousand stomach examinations - Pennsylvania. Ornithologist. (E.K. Meyers, State Printer, 1888)

Report on the birds of Pennsylvania. With special reference to the food-habits, based on over three thousand stomach examinations - Pennsylvania. Ornithologist. (E.K. Meyers, State Printer, 1888)

Report on the birds of Pennsylvania. With special reference to the food-habits, based on over four thousand stomach examinations - Pennsylvania. Ornithologist. (E. K. Meyers, state printer, 1890)

Report on the birds of Pennsylvania : with special reference to the food habits, based on over four thousand stomach examinations - Warren, Benjamin Harry, 1858 -1926 (E.K. Meyers, State Printer, 1890)

Report on the birds of Pennsylvania; with special reference to the food habits, based on over four thousand stomach examinations - Pennsylvania. Ornithologist. (E.K. Meyers, State Printer, 1890)

Report on the geology of South Carolina - Tuomey, M. (Michael), 1805 -1857 (Printed and published for the state, by A.S. Johnston, 1848)

Report on the progress and condition of the U.S. National Museum for the year ending June 30 ... - United States National Museum (G.P.O, 1918)

Report on the United States and Mexican boundary survey :made under the direction of the secretary of the Interior - Emory, William H. 1811 -1887 (C. Wendell, printer, 1859)

Report upon United States Geographical surveys west of the one hundredth meridian - Geographical Surveys West of the 100th Meridian (U.S.) (G.P.O, 1875)

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 the Princeton University Expeditions to Patagonia, 1896-1899. J. B. Hatcher in charge - Princeton University Expeditions to Patagonia 1896 -1899 (The University, 1904)

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A reprint of the North American zoology, by George Ord. Being an exact reproduction of the part originally compiled by Mr. Ord for Johnson & Warner, and first published by them in their 2d American ed. of Guthrie's geography, in 1815. Taken - Ord, George, 1781 -1866 (Pub. by the editor, 1894)

Research in China - Walcott, Charles D. (Charles Doolittle), 1850 -1927 (Carnegie institution of Washington, 1907)

Return / British Museum - British Museum (Natural History) (British Museum, 1856)

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The Review of applied entomology. Series B, Medical and veterinary - Commonwealth Agricultural Bureaux. (Commonwealth Agricultural Bureaux [etc.], 1915)

A review of the birds of Connecticut - Merriam, C. Hart (Clinton Hart), 1855 -1942 (Tuttle, Morehouse & Taylor, Printers, 1877)

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

Revised list of the vertebrated animals now or lately living in the gardens of the Zoological society of London. 1872 - Sclater, Philip Lutley, 1829 -1913 (Printed for the Society, 1872)

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Revista chilena de historia natural - Museo de Historia Natural de Valparaíso (Valparaíso, Chile) (Litografia e Impr. Industrial (F. Peters), 1913)

Revista do Museu Paulista - Museu Paulista (Museu Paulista, 1900)

Revista do Museu Paulista - Museu Paulista (O Museu, 1929)

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

Revista do Museu Paulista - Museu Paulista (O Museu, 1935)

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

Revista do Museu Paulista - Museu Paulista (Museu Paulista, 1914)

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Revue méthodique et critique des collections déposées dans cet établissement - Rijksmuseum van Natuurlijke Historie te Leiden. (Rijksmuseum van Natuurlijke Historie, 1898)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1970)

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

The romance of natural history - Gosse, Philip Henry, 1810 -1888 (J. Nisbet, 1862)

The romance of natural history. 2d series - Gosse, Philip Henry, 1810 -1888 (J. Nisbet, 1861)

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)

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

The royal natural history - Lydekker, Richard, 1849 -1915 (Frederick Warne & Co, 1896)

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

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1921)

The savage world : a complete natural history of the world's creatures, fishes, reptiles, insects, birds and mammals : founded upon the theory of the progression of species, and in accordance with genetic revelation, scriptural truths, and the harmony of nature ... - Buel, James W. (James William), 1849 -1920 (Published and manufactured by Historical Publishing Company, 1891)

Science - American Association for the Advancement of Science. ([s.n.], 1893)

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sheng wu ming cheng he sheng wu xue shu yu de ci yuan - Jaeger, Edmund C. (Edmund Carroll) 1887 -1983 (ke xue chu ban she, 1979)

Significance of white markings in birds of the order Passeriformes - Tracy, Henry Chester, 1876 - (The University press, 1910)

Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe. Abt. 1, Mineralogie, Botanik, Zoologie, Anatomie, Geologie und Paläontologie - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (K.-K. Hof- und Staatsdruckerei in Commission bei Carl Gerold's Sohn, 1863)

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

Sketch of the North-West of America (s.n.], 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, 1962)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1964)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1984)

Spaziergänge eines naturforschers - Marshall, William, 1845 -1907 (A. Seemann, 1898)

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

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

The sportsman's British bird book - Lydekker, Richard, 1849 -1915 (Rowland Ward, 1908)

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

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Statistics of the state of Georgia : including an account of its natural, civil, and ecclesiastical history ; together with a particular description of each county, notices of the manners and customs of its aboriginal tribes, and a correct map of the state - White, George, 1802 -1887 (W. Thorne Williams, 1849)

Status and management of neotropical migratory birds : September 21-25, 1992, Estes Park Center, YMCA of the Rockies, Colorado - U.S. Fish; Wildlife Service (Rocky Mountain Forest and Range Experiment Station, U.S. Dept. of Agriculture, 1993)

The story of the universe, told by great scientists and popular authors - Singleton, Esther, 1930 (P.F. Collier and Son, 1905)

Strolls by starlight and sunshine - Gibson, W. Hamilton (William Hamilton), 1850 -1896 (Harper & Brothers, 1891)

The structure and life of birds - Headley, F. W. (Frederick Webb), 1856 -1919 (Macmillan, 1895)

The student's natural history - Baird, William, 1803 -1872 (C. Griffin, 1863)

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)

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A synopsis of the birds of North America - Audubon, John James, 1785 -1851 (Adam and Charles Black, 1839)