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)

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Abhandlungen der Mathematisch-Physikalischen Klasse der Königlich Bayerischen Akademie der Wissenschaften - Königlich Bayerische Akademie der Wissenschaften (1832)

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. (1879)

Abhandlungen der Naturforschenden Gesellschaft zu Görlitz - Staatliches Museum für Naturkunde Görlitz. (1884)

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

Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft - Senckenbergische Naturforschende Gesellschaft. (Waldemar Kramer [etc.], 1911)

Abhandlungen herausgegeben vom Naturwissenschaftlichen Verein zu Bremen - Naturwissenschaftlicher Verein zu Bremen. (Im Selbstverlag des Naturwissenschaftlichen Vereins, 1871)

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Abhandlungen und Berichte des Königl. Zoologischen und Anthropologisch-Etnographischen Museums zu Dresden - Königl. Zoologisches und Anthropologisch-Ethnographisches Museum zu Dresden (Germany) (R. Friedlaender, 1890)

Acari, Myriopoda et Scorpiones hucusque in Italia reperta - Canestrini, Giovanni, 1835 -1900 (Sumptibus Auctoris, 1882)

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Alauda : revue internationale d'ornithologie - Muséum national d'histoire naturelle (France) (Société d'études ornithologiques de France, 1969)

Alauda : revue internationale d'ornithologie - Muséum national d'histoire naturelle (France) (Société d'études ornithologiques de France, 1970)

Alauda : revue internationale d'ornithologie - Muséum national d'histoire naturelle (France) (Société d'études ornithologiques de France, 1971)

Alauda : revue internationale d'ornithologie - Muséum national d'histoire naturelle (France) (Société d'études ornithologiques de France, 1991)

Alauda : revue internationale d'ornithologie - Muséum national d'histoire naturelle (France) (Société d'études ornithologiques de France, 2001)

Album de aves amazonicas (Impressão do Instituto Polygraphico a.g, 1900)

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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)

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)

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

The animal kingdom : arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy - Carpenter, William Benjamin, 1813 -1885 (Wm. S. Orr and Co., Amen Corner, Paternoster Row, 1849)

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

Animalia vertebrata : Aves classis II - Museo civico di storia naturale di Milano. (the Museo, 1847)

Annalen des K.K. Naturhistorischen Hofmuseums - K.K. Naturhistorisches Hofmuseum (Vienna, Austria) (Alfred Hölder, 1888)

Annales des sciences naturelles Zoologie - Audouin, Jean Victor, 1797 -1841 (Crochard, 1854)

Annales des sciences naturelles Zoologie - Audouin, Jean Victor, 1797 -1841 (Crochard, 1859)

Annales des sciences naturelles Zoologie - Audouin, Jean Victor, 1797 -1841 (Crochard, 1866)

Annali del Museo civico di storia naturale di Genova - Museo civico di storia naturale di Genova (Italy) (Tip. del R. Istituto Sordo-Muti, 1874)

Annali del Museo civico di storia naturale di Genova - Museo civico di storia naturale di Genova (Italy) (Tip. del R. Istituto Sordo-Muti, 1884)

Annali del Museo civico di storia naturale di Genova - Museo civico di storia naturale di Genova (Italy) (Tip. del R. Istituto Sordo-Muti, 1907)

The Annals and magazine of natural history; zoology, botany, and geology (Taylor and Francis, Ltd, 1841)

The Annals and magazine of natural history; zoology, botany, and geology (Taylor and Francis, Ltd, 1856)

Annals of natural history (R. and J.E. Taylor, 1839)

Annals of natural history (R. and J.E. Taylor, 1840)

Annals of natural history (R. and J.E. Taylor, 1841)

Annals of the Carnegie Museum - Carnegie Museum (Published by authority of the Board of Trustees of the Carnegie Institute, 1902)

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

Annotated CITES appendices and reservations 1988 (1988)

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, 1919)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1920)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1922)

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

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1924)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1925)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1926)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1927)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1934)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1937)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1939)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1944)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1957)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1961)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1962)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1963)

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Archiv für Naturgeschichte Abteilung A (Nicolai, 1915)

Archiv für Naturgeschichte (Nicolai, 1844)

Archiv für Naturgeschichte (Nicolai, 1847)

Archiv für Naturgeschichte (Nicolai, 1854)

Archiv für Naturgeschichte (Nicolai, 1860)

Archiv für Naturgeschichte (Nicolai, 1865)

Archiv für Naturgeschichte (Nicolai, 1867)

Archiv für Naturgeschichte (Nicolai, 1868)

Archiv für Naturgeschichte (Nicolai, 1870)

Archiv für Naturgeschichte (Nicolai, 1871)

Archiv für Naturgeschichte (Nicolai, 1880)

Archiv für Naturgeschichte (Nicolai, 1883)

Archiv für Naturgeschichte (Nicolai, 1890)

Archives des sciences physiques et naturelles (A. Cherbuliez, 1876)

Archivos do Museu Nacional do Rio de Janeiro - Museu Nacional (Brazil) ([Cysneiros & Cia, 1923)

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Arsberattelse om Nyare Zoologiska Arbeten och Upptackter till Kongl. Vetenskaps-Acadamien (1837)

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Atlas sistemático de historia natural para uso de las escuelas y de las familias - Bromme, Traugott, 1802 -1866 (Imprenta de Rojas, 1867)

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The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1894)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1876)

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The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1915)

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Austral avian record; a scientific journal devoted primarily to the study of the Australian avifauna - Mathews, Gregory Macalister Gregory Macalister 1876 -1949 (Witherby, 1912)