International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1909)

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1910)

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1912)

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1913)

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1914)

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1916)

International Whaling Commission's deletion of native exemption for the subsistence harvest of bowhead whales : final environmental impact statement - United States. National Marine Fisheries Service. (U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, 1977)

An introduction to the study of the comparative anatomy of animals - Bourne, Gilbert C. (Gilbert Charles), 1861 -1933 (G. Bell & sons, 1902)

An introduction to the study of the comparative anatomy of animals - Bourne, Gilbert C. (Gilbert Charles), 1861 -1933 (G. Bell & sons, 1919)

An introduction to zoology - Hegner, Robert William, 1880 -1942 (The Macmillan company, 1910)

An introduction to zoology, for the use of High schools - Wright, R. Ramsay (Robert Ramsay), 1852 -1933 (Copp, Clark, 1889)

An introduction to zoology : for the use of high schools - Wright, R. Ramsay (Robert Ramsay), 1852 -1933 (Copp, Clark Co, 1889)

Introduction to zoology; a guide to the study of animals, for the use of secondary schools - Davenport, Charles Benedict, 1866 -1944 (Macmillan company, 1900)

An introduction to zoology, with directions for practical work (invertebrates) - Lulham, Rosalie Blanche Jermaine. (Macmillan, 1913)

Invasive alien flora and fauna in South Africa : expertise and bibliography - South African National Biodiversity Institute. (South African National Biodiversity Institute, 2007)

The Invertebrata; a manual for the use of students - Borradaile, L. A. (Lancelot Alexander), 1872 -1945 (Macmillan, 1935)

The Invertebrata; a manual for the use of students - Borradaile, L. A. (Lancelot Alexander), 1872 -1945 (Macmillan, 1932)

Invertebrate animals : collection and preservation - British Museum (Natural History) (British Museum (Natural History), 1979)

Invertebrate zoology - Levi, Herbert Walter, 1921 -2014 (Krieger, 1900)

Invertebrate zoology - Van Cleave, Harley Jones, 1886 -1953 (McGraw-Hill Book Company, Inc, 1931)

Invertebrates in need of special protection in Europe (1987)

Invertebres ayant besoin d'une protection speciale en Europe (1987)

The Irish naturalist - Royal Zoological Society of Ireland. (Eason & Son, Ltd, 1896)

The Irish naturalist - Royal Zoological Society of Ireland. (Eason & Son, Ltd, 1907)

The Irish naturalist - Royal Zoological Society of Ireland. (Eason & Son, Ltd, 1908)

The Irish naturalist - Royal Zoological Society of Ireland. (Eason & Son, Ltd, 1909)

The Irish naturalist - Royal Zoological Society of Ireland. (Eason & Son, Ltd, 1915)

The Irish naturalist - Royal Zoological Society of Ireland. (Eason & Son, Ltd, 1917)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1843)

Die Isopoden der Siboga-Expedition - Nierstrasz, H.F. (Hugo Frederik), 1872 -1937 (E. J. Brill, 1913)

Die Isopoden der Siboga-Expedition - Nierstrasz, H.F. (Hugo Frederik), 1872 -1937 (E. J. Brill, 1941)

IUCN Directory of Afrotropical Protected Areas (1987)