1990 IUCN red list of threatened animals (1990)

1994 IUCN red list of threatened animals (1994)

Abstract of the proceedings of the Linnaean Society of New York - Linnaean Society of New York (The Society, 1888)

An account of the birds and mammals of the San Jacinto area of southern California with remarks upon the behavior of geographic races on the margins of their habitats - Grinnell, Joseph, 1877 -1939 (University of California Press, 1913)

An account of the mammals and birds of the lower Colorado Valley : with especial reference to the distributional problems presented - University of California, Berkeley. (University of California Press, 1914)

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Alauda : revue internationale d'ornithologie - Muséum national d'histoire naturelle (France) (Société d'études ornithologiques de France, 1935)

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American animals; a popular guide to the mammals of North America north of Mexico, with intimate biographies of the more familiar species - Stone, Witmer. 1866 -1939 (Doubleday, Page & Co, 1902)

American animals; a popular guide to the mammals of North American north of Mexico, with intimate biographies of the more familiar species - Stone, Witmer. 1866 -1939 (Doubleday, Page & co, 1913)

American animals; a popular guide to the mammals of North America north of Mexico, with intimate biographies of the more familiar species - Stone, Witmer. 1866 -1939 (Doubleday, Page & Co, 1905)

American animals a popular guide to the mammals of North America, north of Mexico, with intimate biographies of the more familiar species - Stone, Witmer. 1866 -1939 (W. Briggs, 1902)

American animals : a popular guide to the mammals of North America north of Mexico, with intimate biographies of the more familiar species - Stone, Witmer. 1866 -1939 (Doubleday, Page, 1917)

American animals; a popular guide to the mammals of North America north of Mexico, with intimate biographies of the more familiar species - Stone, Witmer. 1866 -1939 (Doubleday, Page & Company,, 1920)

American animals: a popular guide to the mammals of North America north of Mexico, with intimate biographies of the more familiar species - Stone, Witmer. 1866 -1939 (Doubleday, Page & Co, 1904)

American animals; a popular guide to the mammals of North America north of Mexico, with intimate biographies of the more familiar species - Stone, Witmer. 1866 -1939 (Doubleday, Page, 1922)

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The American natural history; a foundation of useful knowledge of the higher animals of North America - Hornaday, William T. (William Temple), 1854 -1937 (C. Scribner's Sons, 1904)

The American natural history : a foundation of useful knowledge of the higher animals of North America - Hornaday, William T. (William Temple), 1854 -1937 (C. Scribner, 1906)

The American natural history; a foundation of useful knowledge of the higher animals of North America - Hornaday, William T. (William Temple), 1854 -1937 (C. Scribner's Sons, 1914)

The American natural history : a foundation of useful knowledge of the higher animals of North America - Hornaday, William T. (William Temple), 1854 -1937 (C. Scribner's sons, 1914)

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American ornithology; or, the natural history of the birds of the United States - Bonaparte, Charles-Lucien, 1803 -1857 (Porter & Coates, 1878)

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Animal life of the Carlsbad cavern - Bailey, Vernon, 1864 -1942 (The Williams & Wilkins Company, 1928)

Animals competitors; profit and loss from the wild four-footed tenants of the farm - Ingersoll, Ernest, 1852 -1946 (Sturgis & Walton company, 1911)

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Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1901)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1902)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1903)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1904)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1923)

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Archiv für Naturgeschichte (Nicolai, 1841)

Archiv für Naturgeschichte (Nicolai, 1859)