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)

Aanwinsten van de Bibliotheek - Nederlandse Dierkundige Vereniging. Bibliotheek. (Nederlandsche Dierkundige Vereeniging, 1901)

Aanwinsten van de Bibliotheek - Nederlandse Dierkundige Vereniging. Bibliotheek. (Nederlandsche Dierkundige Vereeniging, 1906)

Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft - Senckenbergische Naturforschende Gesellschaft. (Waldemar Kramer [etc.], 1914)

Advanced biology - Fitzpatrick, Elizabeth T. (American Book Company, 1929)

Alauda : revue internationale d'ornithologie - Muséum national d'histoire naturelle (France) (Société d'études ornithologiques de France, 1934)

Allgemeine Fischerei-Zeitung (Landesfischereiverband Bayern [etc.], 1897)

Allgemeine Fischerei-Zeitung (Landesfischereiverband Bayern [etc.], 1902)

Allgemeine Fischerei-Zeitung (Landesfischereiverband Bayern [etc.], 1906)

Allgemeine Fischerei-Zeitung (Landesfischereiverband Bayern [etc.], 1907)

Allgemeine Fischerei-Zeitung (Landesfischereiverband Bayern [etc.], 1908)

Allgemeine Zoologie und Abstammungslehre - Plate, Ludwig, 1862 -1937 (Fischer, 1922)

The American entomologist (Max Jaegerhuber, 1880)

American journal of physiology - American Physiological Society (1887- ) (American Physiological Society [etc.], 1900)

The American journal of science (J.D. & E.S. Dana, 1884)

The American journal of science (J.D. & E.S. Dana, 1885)

The American journal of science (J.D. & E.S. Dana, 1886)

The American journal of science (J.D. & E.S. Dana, 1890)

The American journal of science (J.D. & E.S. Dana, 1907)

The American journal of science and arts - Silliman, Benjamin, 1779 -1864 (S. Converse, 1852)

The American journal of science and arts - Silliman, Benjamin, 1779 -1864 (S. Converse, 1855)

The American journal of science and arts - Silliman, Benjamin, 1779 -1864 (S. Converse, 1875)

The American journal of science and arts - Silliman, Benjamin, 1779 -1864 (S. Converse, 1877)

The American lobster; a study of its habits and development - Herrick, Francis Hobart, 1858 -1940 (Govt. Print. Off, 1895)

American men of science; a biographical directory - Cattell, James McKeen, 1860 -1944 (Science Press, 1906)

American men of science; a biographical directory - Cattell, James McKeen, 1860 -1944 (The Science Press, 1921)

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

The American monthly microscopical journal (Romyn Hitchcock, 1887)

The American monthly microscopical journal (Romyn Hitchcock, 1880)

The American monthly microscopical journal (Romyn Hitchcock, 1889)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1867)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1870)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1871)

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.], 1877)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1878)

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.], 1881)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1882)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1884)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1885)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1886)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1888)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1890)

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)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1899)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1900)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1901)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1902)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1903)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1904)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1906)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1907)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1908)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1909)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1912)

Anaerobiosis in invertebrates - Von Brand, Theodor, 1899 -1978 (Biodynamica, 1946)

The anatomical record - Wistar Institute of Anatomy; Biology. (A. R. Liss [etc.], 1906)

Anatomischer Anzeiger - Anatomische Gesellschaft. (G. Fischer, 1896)

Anatomischer Anzeiger - Anatomische Gesellschaft. (G. Fischer, 1902)

Anatomischer Anzeiger - Anatomische Gesellschaft. (G. Fischer, 1904)

Anatomischer Anzeiger - Anatomische Gesellschaft. (G. Fischer, 1910)

Animal biology - Wolcott, Robert Henry, 1868 -1934 (McGraw-Hill Book Company, Inc, 1940)

Animal communities in temperate America - Shelford, Victor E. (Victor Ernest), 1877 -1968 (Pub. by the University of Chicago press, 1913)

Animal communities in temperate America : as illustrated in the Chicago region; a study in animal ecology - Geographic Society of Chicago. (Published for the Geographic Society of Chicago by the University of Chicago Press, 1937)

Animal communities in temperate America, as illustrated in the Chicago region ; a study in animal ecology - Shelford, Victor E. (Victor Ernest), 1877 -1968 (Pub. for the Geographic Society of Chicago by the University of Chicago Press, 1913)

Animal hormones; a comparative survey - Jenkin, Penelope M. (Pergamon Press, 1962)

The animals and man; an elementary textbook of zoology and human physiology - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (H. Holt and Company, 1911)

The animans and man; an elementary textbook of zoology and human physiology - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (H. Holt and company, 1911)

Anleitung zu wissenschaftlichen beobachtungen auf reisen. Mit besonderer rücksicht auf die bedürfnisse der kaiserlichen marine - Neumayer, Georg Balthasar von, 1826 -1909 (R. Oppenheimer, 1875)

Annales de biologie lacustre - Station biologique d'Overmeire. (F. Vanbuggenhoudt, 1907)

Annales de biologie lacustre - Station biologique d'Overmeire. (F. Vanbuggenhoudt, 1908)

Annales de biologie lacustre - Station biologique d'Overmeire. (F. Vanbuggenhoudt, 1912)

Annales de la Société belge de microscopie - Société belge de microscopie. (H. Manceaux, 1875)

Annales de la Société entomologique de France - Société entomologique de France. (La Société, 1858)

Annales de la Société entomologique de France - Société entomologique de France. (La Société, 1878)

Annales des sciences naturelles. Zoologie - Audouin, Jean Victor, 1797 -1841 (Crochard, 1875)