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)

The A B C of evolution - McCabe, Joseph, 1867 -1955 (G. P. Putnam, 1920)

Abhandlungen der Königlichen Gesellschaft der Wissenschaften zu Göttingen - Akademie der Wissenschaften in Göttingen (In der Dieterichschen Buchhandlung, 1889)

Abhandlungen der Naturforschenden Gesellschaft zu Halle - Naturforschende Gesellschaft zu Halle. (Naturforschende Gesellschaft zu Halle, 1888)

Abhandlungen der Naturhistorischen Gesellschaft zu Nürnberg - Naturhistorische Gesellschaft Nürnberg. (Conrad Geiger, 1897)

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

Abhandlungen und Berichte des Königl. Zoologischen und Anthropologisch-Etnographischen Museums zu Dresden - Königl. Zoologisches und Anthropologisch-Ethnographisches Museum zu Dresden (Germany) (R. Friedlaender, 1887)

Abriss der zoologie für studirende : ärzte und lehrer - Brass, Arnold, 1854 -1915 (W. Engelmann, 1882)

Abstammungslehre, Systematik, Paläontologie, Biogeographie - Wettstein, Richard, Ritter von Westersheim, 1863 -1931 (B. G. Teubner, 1914)

Academiae Caesaro-Leopoldinae Naturae Curiosorum Ephemerides, sive, Observationum medico-physicarum - Christophorum Riegelium. (Apud Christophorum Riegelium :Literis Melchioris Gottofredi Heinii, 1715)

Acta Societatis pro Fauna et Flora Fennica - Societas pro Fauna et Flora Fennica (Societas, 1906)

The advancement of science. Occasional essays & addresses - Lankester, E. Ray Sir, (Edwin Ray), 1847 -1929 (Macmillan, 1890)

The advancement of science. Occasional essays & addresses - Lankester, E. Ray Sir, (Edwin Ray), 1847 -1929 (Macmillan and co, 1890)

Agricultural news - Great Britain. Imperial Dept. of Agriculture for the West Indies. (Bowen & sons, 1906)

Agricultural news - Great Britain. Imperial Dept. of Agriculture for the West Indies. (Bowen & sons, 1919)

Agricultural news - Great Britain. Imperial Dept. of Agriculture for the West Indies. (Bowen & sons, 1912)

Agricultural news - Great Britain. Imperial Dept. of Agriculture for the West Indies. (Bowen & sons, 1913)

Agricultural news - Great Britain. Imperial Dept. of Agriculture for the West Indies. (Bowen & sons, 1918)

Aide-mémoire de Zoologie - Girard, Henri, 1879 -1949 (J.-B. Bailliere, 1895)

Album der Natuur - Vries, Hugo de, 1848 -1935 (1876)

Allgemeine Biologie - Hertwig, Oscar, 1849 -1922 (G. Fischer, 1906)

Allgemeine Biologie - Hertwig, Oscar, 1849 -1922 (G. Fischer, 1909)

Allgemeine Biologie - Hertwig, Oscar, 1849 -1922 (G. Fischer, 1923)

Allgemeine naturgeschichte, als Philosophische und Humanitätswissenschaft für Naturforscher, Philosophen und das Hoher gebildete Publikum - Perty, Maximilian, 1804 -1884 (C. Fischer, 1841)

Allgemeine naturgeschichte, als Philosophische und Humanitätswissenschaft für Naturforscher, Philosophen und das Hoher gebildete Publikum - Perty, Maximilian, 1804 -1884 (C. Fischer, 1846)

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

American insects - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (Constable and Co, 1905)

American insects - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (Holt, 1904)

American insects - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (H. Holt and Company, 1908)

American insects - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (H. Holt and Company, 1905)

American insects - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (Holt, 1914)

The American journal of anatomy - Wistar Institute of Anatomy; Biology. ([s.n.], 1901)

The American journal of anatomy - Wistar Institute of Anatomy; Biology. ([s.n.], 1904)

The American journal of anatomy - Wistar Institute of Anatomy; Biology. ([s.n.], 1905)

American journal of physiology - American Physiological Society (1887- ) (American Physiological Society [etc.], 1905)

The American journal of science (J.D. & E.S. Dana, 1881)

The American journal of science (J.D. & E.S. Dana, 1882)

The American journal of science (J.D. & E.S. Dana, 1894)

The American journal of science (J.D. & E.S. Dana, 1899)

The American journal of science (J.D. & E.S. Dana, 1906)

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

The American journal of science (J.D. & E.S. Dana, 1916)

The American journal of science and arts - Silliman, Benjamin, 1779 -1864 (S. Converse, 1851)

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 (The Science Press, 1921)

The American monthly microscopical journal (Romyn Hitchcock, 1887)

The American monthly microscopical journal (Romyn Hitchcock, 1888)

The American monthly microscopical journal (Romyn Hitchcock, 1896)

The American monthly microscopical journal (Romyn Hitchcock, 1899)

The American Museum journal - American Museum of Natural History (American Museum of Natural History, 1917)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1875)

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.], 1882)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1883)

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.], 1887)

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.], 1889)

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.], 1892)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1893)

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.], 1896)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1897)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1898)

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.], 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.], 1914)

American spiders - Gertsch, Willis John, 1906 - (Van Nostrand, 1949)

Die Amphorideen und Cystoideen : beiträge zur Morphologie und Phylogenie der Echinodermen / von Ernst Haeckel - Haeckel, Ernst, 1834 -1919 (W. Engelmann, 1896)

Anales de la Sociedad Científica Argentina - Sociedad Científica Argentina ([Sociedad Científica Argentina], 1928)

Anales de la Sociedad Española de Historia Natural - Sociedad Española de Historia Natural. (La Sociedad, 1900)

Anales de la Universidad de Chile - Universidad de Chile. (1911)

L'anatomie comparée des animaux basée sur l'embryologie - Roule, Louis, 1861 -1942 (Masson, 1898)