An index to the scientific contents of the Journal and Proceedings of the Academy of Natural Sciences of Philadelphia [1817-1910] Published in commemoration of the centenary of the academy, March 21, 1912 - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences, 1912)

Indicis generum malacozoorum primordia : nomina subgenerum, generum, familiarum, tribuum, ... / conscripsit A. N. Herrmannsen - Herrmannsen, August Nicolaus, 1807 -1854 (Theodor Fischer, 1846)

Indicis generum malacozoorum primordia : nomina subgenerum, generum, familiarum, tribuum, ... / conscripsit A. N. Herrmannsen - Herrmannsen, August Nicolaus, 1807 -1854 (Theodor Fischer, 1847)

Indisch natuuronderzoek ... - Sirks, M. J. (Marius Jacob), 1889 - (Amsterdanmsche boek- en steendrukkerij v/h Ellerman, Harms & co, 1915)

The infancy of animals - Pycraft, W. P. (William Plane), 1868 -1942 (H. Holt and Company, 1913)

The infancy of animals - Pycraft, W. P. (William Plane), 1868 -1942 (Hutchinson & Co, 1913)

Influence de la fixation pleurothétique sur la morphologie des mollusques acéphales dimyaires - Anthony, R. (Raoul) 1874 -1941 (Masson, 1905)

Information resources on the care and use of molluscs - Animal Welfare Information Center (U.S.) (U.S. Dept. of Agriculture, Agriculture Research Service, National Agricultural Library, Animal Welfare Information Center, 2003)

Informe oficial de la Comisión científica agregada al Estado Mayor general de la expedicion al Rio Negro (Patagonia) realizada en los meses de Abril, Mayo y Junio de 1879, bajo las órdenes del general d. Julio A. Roca (con 16 láminas) - Berg, Cárlos, 1843 -1902 (Imprenta de Ostwald y Martinez, 1881)

Die infusionsthierchen als vollkommene organismen. Ein blick in das tiefere organische leben der natur - Ehrenberg, Christian Gottfried, 1795 -1876 (L. Voss, 1838)

Die Infusionsthierchen als vollkommene Organismen. Ein Blick in das tiefere organische Leben der Natur - Ehrenberg, Christian Gottfried, 1795 -1876 (L. Voss, 1838)

Inland fishes of Massachusetts - Massachusetts Audubon Society. (Massachusetts Audubon Society, 2002)

The inland lakes of Wisconsin ; The plankton. 1, Its quantity and chemical composition - Birge, E. A. (Edward Asahel), 1851 -1950 (The State, 1922)

The inland lakes of Wisconsin. The plankton. I. Its quantity and chemical composition - Birge, E. A. (Edward Asahel), 1851 -1950 (Pub. by the state, 1922)

Insekten-Börse (1899)

Insekten-Börse (1901)

Insekten-Börse (1903)

Insekten-Börse (1905)

Insekten-Börse (1906)

The Intellectual observer (Groombridge and Sons, 1865)

The Intellectual observer; a review of natural history, microscopic research, and recreative science; also the Student, being the continuation of the Intellectual observer. A collection of eighty [i.e. 96] superbly coloured plates of natural history and botanical specimens, including caterpillars, fungi, corals ... (1870)

International catalogue of scientific literature. N, Zoology - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1901)

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1905)

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1906)

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1908)

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, 1901)

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

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1919)

Internationale entomologische Zeitschrift - Internationales Entomologen-Bund. (Internationaler Entomologischer Verein E.V, 1915)

Internationale Monatsschrift für Anatomie und Physiologie (G. Thieme [et al.,], 1894)

Internationale Monatsschrift für Anatomie und Physiologie (G. Thieme [et al.,], 1897)

Introduction à l'étude des mollusques - Pelseneer, Paul, 1863 -1945 (Henri Lamertin, 1894)

An introduction to animal morphology and systematic zoology - Macalister, Alexander, 1844 -1919 (Longmans, 1876)

An introduction to animal morphology and systematic zoology : pt. I. Invertebrata - Macalister, Alexander, 1844 -1919 (Longmans, Green, 1876)

An introduction to conchology; or, Elements of the natural history of molluscous animals - Johnston, George, 1797 -1855 (J. Van Voorst, 1850)