1986 IUCN red list of threatened animals - IUCN Conservation Monitoring Centre. (International Union for Conservation of Nature and Natural Resources, 1986)

1988 IUCN red list of threatened animals (1988)

1990 IUCN red list of threatened animals (1990)

1994 IUCN red list of threatened animals (1994)

Abhandlungen der Mathematisch-Physikalischen Klasse der Königlich Bayerischen Akademie der Wissenschaften - Königlich Bayerische Akademie der Wissenschaften (1914)

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

Abstract of the proceedings of the Linnaean Society of New York - Linnaean Society of New York (The Society, 1903)

Abstract of the proceedings of the Linnaean Society of New York - Linnaean Society of New York (The Society, 1917)

The accipiters : goshawk, cooper's hawk, sharp-shinned hawk - United States. Bureau of Land Management. (Denver, Colo, 1979)

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)

Acta Botánica Mexicana - Instituto de Ecología, A C. (Instituto de Ecología, A C, 2012)

Advances in herpetology and evolutionary biology : essays in honor of Ernest E. Williams - Harvard University. Museum of Comparative Zoology. (Museum of Comparative Zoology, 1983)

The African Republic of Liberia and the Belgian Congo : based on the observations made and material collected during the Harvard African Expedition, 1926-1927 - Strong, Richard P. (Richard Pearson), 1872 -1948 (Harvard University Press, 1930)

Agriculture of Maine. ... annual report of the Secretary of the Maine Board of Agriculture - Maine. Board of Agriculture. (1862)

Alauda : revue internationale d'ornithologie - Muséum national d'histoire naturelle (France) (Société d'études ornithologiques de France, 1951)

The algae of Bermuda - Collins, Frank S. (Frank Shipley), 1848 -1920 ([American Academy of Arts and Sciences], 1917)

American birds studied and photographed from life - Finley, William L. (William Lovell), 1876 -1953 (Scribner's sons, 1907)

American birds, studied and photographed from life - Finley, William L. (William Lovell), 1876 -1953 (C. Scribner's sons, 1907)

The American journal of science and arts - Silliman, Benjamin, 1779 -1864 (S. Converse, 1872)

The American midland naturalist - University of Notre Dame (University of Notre Dame, 1909)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1868)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1869)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1872)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1873)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1874)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1880)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1891)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1894)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1895)

American ornithology, for home and school - Reed, Chester A. (Chester Albert), 1876 -1912 (Charles K. Reed], 1903)

American ornithology, for home and school - Reed, Chester A. (Chester Albert), 1876 -1912 (Charles K. Reed], 1904)

American ornithology, for home and school - Reed, Chester A. (Chester Albert), 1876 -1912 (Charles K. Reed], 1905)

American ornithology : or, The natural history of the birds of the United States - Baird, Spencer Fullerton, 1823 -1887 (Porter and Coates, 1870)

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

American ornithology, or, The natural history of the birds of the United States : illustrated with plates engraved from drawings from nature - Baird, Spencer Fullerton, 1823 -1887 (Porter & Coates, 1878)

Anales de la Sociedad Española de Historia Natural - Sociedad Española de Historia Natural. (La Sociedad, 1873)

Anales de la Sociedad Española de Historia Natural - Sociedad Española de Historia Natural. (La Sociedad, 1878)

Anales del Museo Nacional de Buenos Aires - Museo Nacional de Buenos Aires. (Impr. de Juan A. Alsina, 1895)

Anales del Museo Nacional de Historia Natural de Buenos Aires - Museo Nacional de Historia Natural de Buenos Aires. (Impr. y Casa Editora "Juan A. Alsina", 1911)

Anales del Museo Nacional de México - Museo Nacional de México. (El Museo, 1877)

Animal life in the Yosemite; an account of the mammals, birds, reptiles, and amphibians in a cross-section of the Sierra Nevada - Grinnell, Joseph, 1877 -1939 (University of California Press, 1924)

Animate creation; popular edition of "Our living world" a natural history - Wood, J. G. (John George), 1827 -1889 (S. Hess, 1885)

Animate creation; popular edition of "Our Living World" a natural history - Brehm, Alfred Edmund, 1829 -1884 (S. Hess, 1898)

The Annals and magazine of natural history; zoology, botany, and geology (Taylor and Francis, Ltd, 1859)

Annals of the Carnegie Museum - Carnegie Museum (Published by authority of the Board of Trustees of the Carnegie Institute, 1904)

Annals of the Carnegie Museum - Carnegie Museum (Published by authority of the Board of Trustees of the Carnegie Institute, 1910)

Annals of the Carnegie Museum - Carnegie Museum (Published by authority of the Board of Trustees of the Carnegie Institute, 1911)

Annals of the Carnegie Museum - Carnegie Museum (Published by authority of the Board of Trustees of the Carnegie Institute, 1916)

Annals of the Carnegie Museum - Carnegie Museum (Published by authority of the Board of Trustees of the Carnegie Institute, 1922)

Annals of the Carnegie Museum - Carnegie Museum (Published by authority of the Board of Trustees of the Carnegie Institute, 1926)

Annals of the Carnegie Museum - Carnegie Museum (Published by authority of the Board of Trustees of the Carnegie Institute, 1928)

Annals of the Carnegie Museum - Carnegie Museum (Published by authority of the Board of Trustees of the Carnegie Institute, 1934)

Annals of the Carnegie Museum - Carnegie Museum (Published by authority of the Board of Trustees of the Carnegie Institute, 1938)

Annals of the Carnegie Museum - Carnegie Museum (Published by authority of the Board of Trustees of the Carnegie Institute, 1942)

Annals of the Lyceum of Natural History of New York - Lyceum of Natural History (New York, N.Y.) (1862)

Annals of the Lyceum of Natural History of New York - Lyceum of Natural History (New York, N.Y.) (1867)

Annals of the Lyceum of Natural History of New York - Lyceum of Natural History (New York, N.Y.) (1870)

Annals of the Lyceum of Natural History of New York - Lyceum of Natural History (New York, N.Y.) (1874)

Annals of the Lyceum of Natural History of New York - Lyceum of Natural History (New York, N.Y.) (1824)

Annals of the Missouri Botanical Garden - Missouri Botanical Garden. (Missouri Botanical Garden Press, 1953)

Annotated list of the Avery bird collection in the Alabama Museum of Natural History (Geological Survey Museum) - Avery, Mary E. (1921)

Annotated list of the Avery bird collection in the Alabama museum of natural history (Geological survey museum) - Geological Survey of Alabama. (1921)

Annotated list of the birds of Michigan / c by Morris Gibbs - Coues, Elliott, 1842 -1899 (Dept. of the Interior, U.S. Geological and Geographical Survey of the Territories, 1879, 1879)

Annotated list of the birds of Oneida County, N.Y., and its immediate vicinity - Ralph, William L. (E.H. Roberts, Printers, 1886)

Annotated list of the birds of Point Pelee - Taverner, P. A. (Percy Algernon), 1875 -1947 (1908)

Annual report - New York State Museum. (University of the State of New York, 1914)

Annual report. United States Geological and Geographical Survey of the Territories. 1st-12th, 1867-1878 - Geological; Geographical Survey of the Territories (U.S.) (Govt. Print. Off, 1870)

Annual report. United States Geological and Geographical Survey of the Territories. 1st-12th, 1867-1878 - Geological; Geographical Survey of the Territories (U.S.) (Govt. Print. Off, 1872)

Annual report - Entomological Society of Ontario. (The Society, 1891)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1861)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1884)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1886)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1889)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1890)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1891)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1893)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1898)

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, 1901)

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, 1905)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1909)

Annual report of the Nebraska State Horticultural Society - Nebraska State Horticultural Society. (The Society, 1896)

Annual report of the New Jersey State Museum - Smith, John Bernhard, 1858 -1912 (MacCrellish & Quigley, State Printers, 1902)

Annual report of the Ohio State Academy of Science - Ohio Academy of Science. (The Academy, 1901)

Annual Report of the Regents of the University on the condition of the State Cabinet of Natural History, with catalogues of the same - New York State Museum. (The University, 1865)

Annual report of the Secretary of the Massachusetts Board of Agriculture - Massachusetts. State Board of Agriculture. (W. White, 1865)

Annual report of the Secretary of the State Board of Agriculture of the State of Michigan - Michigan State College. Agricultural Experiment Station. (The Board, 1862)

Annual report of the State Horticultural Society of Missouri - Missouri State Horticultural Society. (The Society, 1888)

Annual report on the noxious, beneficial and other insects of the State of Missouri - Riley, Charles V. (Charles Valentine), 1843 -1895 (Ellwood Kirby, 1873)

Annual report upon the geographical surveys west of the one-hundredth meridian in the states and territories of California, Oregon, Nevada, Texas, Arizona, Colorado, Idaho, Montana, New Mexico, Utah, and Wyoming : being Appendix NN of the Annual report of the Chief of Engineers for 1877 - Geographical Surveys West of the 100th Meridian (U.S.) (Govt. Print. Off, 1877)

Apuntes para la fauna Puerto-Riqueña - Gundlach, Johannes Christoph, 1810 -1896 (s.n, 1878)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1897)

The Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) ([University of Washington, 1951)

Archiv für Naturgeschichte Abteilung B (Nicolai, 1912)

Archiv für Naturgeschichte Abteilung B (Nicolai, 1918)

Archiv für Naturgeschichte Abteilung B (Nicolai, 1920)

Archiv für Naturgeschichte Abteilung A (Nicolai, 1915)