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)

A-birding on a bronco - Bailey, Florence Merriam, 1863 -1948 (Houghton, Mifflin, 1896)

Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin - Deutsche Akademie der Wissenschaften zu Berlin. (Realschul-Buchhandlung, 1845)

Abhandlungen der Mathematisch-Physikalischen Klasse der Königlich Bayerischen Akademie der Wissenschaften - Königlich Bayerische Akademie der Wissenschaften (1906)

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

Abhandlungen der Naturforschenden Gesellschaft zu Görlitz - Staatliches Museum für Naturkunde Görlitz. (1887)

Abstract of proceedings of the Delaware Valley Ornithological Club of Philadelphia - Delaware Valley Ornithological Club. (Delaware Valley Ornithological Club, 1890)

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, 1916)

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 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)

Alauda : revue internationale d'ornithologie - Muséum national d'histoire naturelle (France) (Société d'études ornithologiques de France, 1933)

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

Album 1 Wyoming, 1910; Alaska, 1911; Puerto Rico and Virgin Islands, 1911-1912; includes photographs of Wetmore, Merritt Cary, Daniel Denison Streeter, and Arthur Cleveland Bent - Wetmore, Alexander, 1886 -1978 (1911)

Az állat-ország fölosztva alkotása szerint : alapul szolgálandó az állatok természetleirásához s bevezetésul az összehasonlitó bonctanhoz - Cuvier, Georges, baron, 1769 -1832 (A Magyar Királyi Egyetem Betuivel. A M. Acadm. költségein, 1841)

Allerlei sprechendes gefiedertes Volk : raben- oder kra¨henartige Vo¨gel [mit Einschluss der Pfeifkra¨hen oder Flo¨tenvo¨gel und der Laubenvo¨gel], Pastorvogel, Starvo¨gel, Drosseln, Kanarienvogel und Gimpel oder Dompfaff : ein Hand- und Le - Russ, Karl, 1833 -1899 (Creutzsche Verlagsbuchhandlung, 1889)

American agriculturist (Orange Judd Co., Publishers [etc.], 1858)

American agriculturist (Orange Judd Co., Publishers [etc.], 1867)

The American farmer ; a complete agricultural library, with useful facts for the household, devoted to farming in all its departments and details ... - Flint, Charles Louis, 1824 -1889 (R.H. Park, 1882)

The American journal of science and arts - Silliman, Benjamin, 1779 -1864 (S. Converse, 1844)

The American midland naturalist - University of Notre Dame (University of Notre Dame, 1921)

The American natural history : a foundation of useful knowledge of the higher animals of North America - Beard, J. Carter (James, Carter), 1837 -1913 (G. Newnes, 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'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's Sons, 1914)

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.], 1896)

The American oologists' exchange price list of North American birds' eggs, 1922 - Bales, B. R. (R.M. Barnes, 1922)

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 : 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 - Bonaparte, Charles-Lucien, 1803 -1857 (Cassell, Petter & Galpin, 1880)

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)

American ornithology; or, The natural history of the birds of the United States - Bonaparte, Charles-Lucien, 1803 -1857 (Cassell, Petter & Galpin, 1870)

American ornithology, or, The natural history of the birds of the United States - Ord, George, 1781 -1866 (Whittaker, Treacher & Arnot, 1832)

American ornithology, or, The natural history of the birds of the United States - Ord, George, 1781 -1866 (Printed for Constable and Co, 1831)

American ornithology, with notes by Jardine. To which is added a synopsis of American birds, including those described by Bonaparte, Audubon, Nuttall, and Richardson, by T.M. Brewer - Brewer, T. M. (Thomas Mayo), 1814 -1880 (H.S. Samuels, 1853)

The American text book of practical and scientific agriculture - Fox, Charles, 1815 -1854 (Elwood and company, 1854)

The American text book of practical and scientific agriculture, intended for the use of colleges, schools, and private students as well as for the practical farmer. Including analyses by the most eminent chemists - Making of America Project. (Elwood and company, 1854)

Anales de la Sociedad Científica Argentina - Sociedad Científica Argentina ([Sociedad Científica Argentina], 1914)

Anales de la Sociedad Científica Argentina - Sociedad Científica Argentina ([Sociedad Científica Argentina], 1915)

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 de la Universidad de Chile - Universidad de Chile. (1867)

Anales de la Universidad de Chile - Universidad de Chile. (1872)

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

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

The animal kingdom, arranged according to its organization, serving as a foundation for the natural history of animals : and an introduction to comparative anatomy - Cuvier, Georges, baron, 1769 -1832 (G. Henderson, 1831)

The animal kingdom, arranged according to its organization, serving as a foundation for the natural history of animals : and an introduction to comparative anatomy - Cuvier, Georges, baron, 1769 -1832 (G. Henderson, 1836)

The animal kingdom : arranged in conformity with its organization - Gray, John Edward 1800 -1875 (Printed for G.B. Whittaker, 1829)

The animal kingdom : arranged in conformity with its organization - Gray, John Edward 1800 -1875 (Printed for G.B. Whittaker, 1835)

The animal kingdom : arranged in conformity with its organization - Cuvier, Georges, baron, 1769 -1832 (G. & C. & H. Carvill, 1831)

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)

Annalen des K.K. Naturhistorischen Hofmuseums - K.K. Naturhistorisches Hofmuseum (Vienna, Austria) (Alfred Hölder, 1887)

The Annals and magazine of natural history; zoology, botany, and geology (Taylor and Francis, Ltd, 1842)

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)