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

Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin - Deutsche Akademie der Wissenschaften zu Berlin. (Realschul-Buchhandlung, 1846)

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)

Actes de la Société linnéenne de Bordeaux - Société Linnéenne de Bordeaux. (The Society, 1923)

Alauda : revue internationale d'ornithologie - Muséum national d'histoire naturelle (France) (Société d'études ornithologiques de France, 1954)

Alauda : revue internationale d'ornithologie - Muséum national d'histoire naturelle (France) (Société d'études ornithologiques de France, 1962)

Album der Natuur - Vries, Hugo de, 1848 -1935 (1861)

The American Museum journal - American Museum of Natural History (American Museum of Natural History, 1916)

American Museum novitates - American Museum of Natural History (American Museum of Natural History, 1921)

Anales científicos paraguayos - Bertoni, Moisés S. (1901)

Anales científicos paraguayos - Bertoni, Moisés S. (1916)

Anales de la Sociedad Científica Argentina - Sociedad Científica Argentina ([Sociedad Científica Argentina], 1891)

Anales de la Sociedad Científica Argentina - Sociedad Científica Argentina ([Sociedad Científica Argentina], 1905)

Anales de la Sociedad Científica Argentina - Sociedad Científica Argentina ([Sociedad Científica Argentina], 1906)

Anales de la Sociedad Científica Argentina - Sociedad Científica Argentina ([Sociedad Científica Argentina], 1913)

Anales de la Sociedad Científica Argentina - Sociedad Científica Argentina ([Sociedad Científica Argentina], 1932)

Anales de la Universidad de Chile - Universidad de Chile. (1861)

Anales de la Universidad de Chile - Universidad de Chile. (1868)

Anales de la Universidad de Chile - Universidad de Chile. (1893)

Anales de la Universidad de Chile - Universidad de Chile. (1896)

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

Anales del Museo Nacional de Chile - Museo Nacional de Chile. (el Museo, 1896)

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 Público de Buenos Aires - Museo Público de Buenos Aires. (El Museo, 1888)

The Analyst : monthly journal of science, literature, and the fine arts (1835)

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 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 after its organization, forming a natural history of animals and an introduction to comparative anatomy - Carpenter, William Benjamin, 1813 -1885 (W. S. Orr and co, 1854)

The animal kingdom : arranged after its organization; forming a natural history of animals, and an introduction to comparative anatomy - Carpenter, William Benjamin, 1813 -1885 (H.G. Bohn, 1863)

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 British Guiana - Quelch, J. J. (John Joseph), 1854 - ("The argosy" co, 1901)

Animals in menageries - Swainson, William, 1789 -1855 (Printed for Longman, Orme, Brown, Green, & Longmans, and John Taylor, 1838)

Annalen des K.K. Naturhistorischen Hofmuseums - K.K. Naturhistorisches Hofmuseum (Vienna, Austria) (Alfred Hölder, 1886)

Annales de la Société Linnéenne de Lyon - Société Linnéenne de Lyon. (Société Linnéenne de Lyon, 1878)

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

The Annals and magazine of natural history; zoology, botany, and geology (Taylor and Francis, Ltd, 1840)

The Annals and magazine of natural history; zoology, botany, and geology (Taylor and Francis, Ltd, 1843)

The Annals and magazine of natural history; zoology, botany, and geology (Taylor and Francis, Ltd, 1844)

The Annals and magazine of natural history; zoology, botany, and geology (Taylor and Francis, Ltd, 1847)

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

The Annals and magazine of natural history; zoology, botany, and geology (Taylor and Francis, Ltd, 1857)

The Annals and magazine of natural history; zoology, botany, and geology (Taylor and Francis, Ltd, 1858)

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

The Annals and magazine of natural history; zoology, botany, and geology (Taylor and Francis, Ltd, 1860)

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, 1922)

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, 1951)

Annals of the Carnegie Museum - Carnegie Museum (Published by authority of the Board of Trustees of the Carnegie Institute, 1992)

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.) (1874)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1895)

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, 1915)

Annual report of the Board of Regents of the Smithsonian Institution - Smithsonian Institution (Smithsonian Institution, 1929)

Apuntamientos para la historia natural de los páxaros del Paragüay y Rio de la Plata - Azara, Félix de, 1746 -1821 (Impr. de la viuda de Ibarra [etc.], 1847)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1901)

Archiv für Naturgeschichte. Abteilung B (Nicolai, 1913)

Archiv für Naturgeschichte. Abteilung B (Nicolai, 1917)

Archiv für Naturgeschichte. Abteilung B (Nicolai, 1918)

Archiv für Naturgeschichte. Abteilung B (Nicolai, 1920)

Archiv für Anatomie, Physiologie und Wissenschaftliche Medicin - Müller, Johannes, 1801 -1858 (1846)

Archiv für Naturgeschichte. Abteilung A (Nicolai, 1912)

Archiv für Naturgeschichte (Nicolai, 1839)