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)

Aberystwyth Studies (University College of Wales, 1912)

Abhandlungen der Königlichen Gesellschaft der Wissenschaften zu Göttingen. Mathematisch-Physikalische Klasse - Königliche Gesellschaft der Wissenschaften zu Göttingen. (1904)

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

The Academy newsletter - California Academy of Sciences (The Academy, 1969)

Acta Botánica Mexicana - Instituto de Ecología, A C. (Instituto de Ecología, A C, 2012)

Acta Societatis pro Fauna et Flora Fennica - Societas pro Fauna et Flora Fennica (Societas, 1921)

Actes de la Société linnéenne de Bordeaux. Série A - Société Linnéenne de Bordeaux. (La Société, 1965)

Actes de la Société linnéenne de Bordeaux. Série A - Société Linnéenne de Bordeaux. (La Société, 1966)

Activities report - Smithsonian Institution (Museum of Natural History, Smithsonian Institution, 1965)

Additions to the Turbellaria, Nemertina, and Annelida of the Bermudas : with revisions of some New England genera and species - Verrill, A. E. (Addison Emery), 1839 -1926 (Connecticut Academy of Arts and Sciences, 1900)

The Alcyonacea of the Siboga-Expedition : with an Addendum to the Gorgonacea - Thomson, J. Arthur (John Arthur), 1861 -1933 (1931)

Allan Hancock Atlantic expedition - Allan Hancock Foundation. (The University, 1945)

Allan Hancock Pacific expeditions. [Reports] - Allan Hancock Foundation. (University of Southern California Press, 1939)

Allan Hancock Pacific expeditions. [Reports] - Allan Hancock Foundation. (University of Southern California Press, 1940)

Allan Hancock Pacific expeditions. [Reports] - Allan Hancock Foundation. (University of Southern California Press, 1944)

Allan Hancock Pacific expeditions. [Reports] - Allan Hancock Foundation. (University of Southern California Press, 1947)

Allan Hancock Pacific expeditions. [Reports] - Allan Hancock Foundation. (University of Southern California Press, 1950)

Allan Hancock Pacific expeditions. [Reports] - Allan Hancock Foundation. (University of Southern California Press, 1957)

Allan Hancock Pacific expeditions. [Reports] - Allan Hancock Foundation. (University of Southern California Press, 1966)

Allan Hancock Pacific expeditions. [Reports] - Allan Hancock Foundation. (University of Southern California Press, 1958)

Allan Hancock Pacific expeditions. [Reports] - Allan Hancock Foundation. (University of Southern California Press, 1960)

Allan Hancock Pacific expeditions. [Reports] - Allan Hancock Foundation. (University of Southern California Press, 1961)

Allan Hancock Pacific expeditions. [Reports] - Allan Hancock Foundation. (University of Southern California Press, 1963)

Ambient water quality criteria for dissolved oxygen, water clarity and chlorophyll a for Chesapeake Bay and its tidal tributaries : 2007 addendum - United States. Environmental Protection Agency. Office of Water. (U.S. Environmental Protection Agency, Region III, Chesapeake Bay Program Office, 2007)

American conchologist : quarterly bulletin of the Conchologists of America, Inc - Conchologists of America. (Lipps-National Press, 1992)

American conchologist : quarterly bulletin of the Conchologists of America, Inc - Conchologists of America. (Lipps-National Press, 2001)

American conchologist : quarterly bulletin of the Conchologists of America, Inc - Conchologists of America. (Lipps-National Press, 2005)

The American geologist - Winchell, N. H. 1839 -1914 (Geological Pub. Co. [etc.], 1901)

The American journal of anatomy - Wistar Institute of Anatomy; Biology. ([s.n.], 1916)

The American journal of science (J.D. & E.S. Dana, 1903)

American malacological bulletin. Special edition - American Malacological Union. (American Malacological Union], 1985, 1985)

American malacological bulletin - American Malacological Union. ([American Malacological Union], 1984)

American malacological bulletin - American Malacological Union. ([American Malacological Union], 1986)

American malacological bulletin. Special edition - American Malacological Union. (American Malacological Union], 1985, 1986)

American malacological bulletin - American Malacological Union. ([American Malacological Union], 1987)

American malacological bulletin - American Malacological Union. ([American Malacological Union], 1991)

American malacological bulletin - American Malacological Union. ([American Malacological Union], 1993)

American malacological bulletin - American Malacological Union. ([American Malacological Union], 1996)

American malacological bulletin - American Malacological Union. ([American Malacological Union], 2000)

American malacological bulletin - American Malacological Union. ([American Malacological Union], 2007)

American malacological bulletin - American Malacological Union. ([American Malacological Union], 2008)

American malacological bulletin - American Malacological Union. ([American Malacological Union], 2012)

American malacological bulletin - American Malacological Union. ([American Malacological Union], 2013)

American malacological bulletin - American Malacological Union. ([American Malacological Union], 2014)

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

The American monthly microscopical journal (Romyn Hitchcock, 1893)

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

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.], 1898)

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.], 1904)

Amphibian & reptile conservation (Amphibian & Reptile Conservation, 2017)

Amphipacifica : journal of systematic biology (Amphipacifica Research Publications, 1994)

Amphipacifica : journal of systematic biology (Amphipacifica Research Publications, 1995)

Amphipacifica : journal of systematic biology (Amphipacifica Research Publications, 1996)

Amphipacifica : journal of systematic biology (Amphipacifica Research Publications, 2000)

Amphipod newsletter - Australian Museum (Canadian Museum of Nature, 1976)

Amphipod newsletter - Australian Museum (Canadian Museum of Nature, 1979)

Amphipod newsletter - Australian Museum (Canadian Museum of Nature, 1984)

Amphipod newsletter - Australian Museum (Canadian Museum of Nature, 2003)

Amphipod newsletter - Australian Museum (Canadian Museum of Nature, 2004)

Amphipod newsletter - Australian Museum (Canadian Museum of Nature, 2016)

Amphipod newsletter - Australian Museum (Canadian Museum of Nature, 2017)

Amphipod newsletter - Australian Museum (Canadian Museum of Nature, 2018)