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)

Indian snakes. An elementary treatise on ophiology with a descriptive catalogue of the snakes found in India and the adjoining countries - Nicholson, Edward. (Higginbotham, 1874)

Indian zoology - Forster, Johann Reinhold, 1729 -1798 (Printed by Henry Hughs, for Robert Faulder, 1790)

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)

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)

Insect transformations - Rennie, James, 1787 -1867 (C. Knight, Longman, Rees, Orme, Brown, & Green, 1830)

Les insectes : Traité élémentaire d'entomologie, comprenant l'histoire des esèces utiles et de leurs produits des espèces nuisibles et des moyens de les détruire, l'étude des métamorphoses et des moeurs, les procédés de chasses et de conversation - Girard, Maurice, 1822 -1886 (J.-B. Baillière, 1873)

Insekten-Börse (1885)

Insekten-Börse (1886)

The Intellectual observer (Groombridge and Sons, 1862)

The Intellectual observer (Groombridge and Sons, 1863)

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, 1907)

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 code of zoological nomenclature = Code international de nomenclature zoologique - International Commission on Zoological Nomenclature (International Trust for Zoological Nomenclature, c/o Natural History Museum, 1999)

International code of zoological nomenclature, adopted by the XV International Congress of Zoology / Code international de nomenclature zoologique, adopté par le XVe Congrès international de zoologie - International Commission on Zoological Nomenclature (Published for the International Commission on Zoological Nomenclature by the International Trust for Zoological Nomenclature, 1961)

International code of zoological nomenclature adopted by the XV International Congress of Zoology / Code international de nomenclature zoologique, adopté par le XVe Congrès international de zoologie - International Commission on Zoological Nomenclature (International Trust for Zoological Nomenclature, 1964)

Internationale Monatsschrift für Anatomie und Physiologie (G. Thieme [et al.,], 1893)

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

Introductio ad historiam naturalem sistens genera lapidum, plantarum, et animalium :hactenus detecta, caracteribus essentialibus donata, in tribus divisa, subinde ad leges naturae - Scopoli, Giovanni Antonio, 1723 -1788 (Apud Wolfgangum Gerle, 1777)

Introduction aux amphibiens et reptiles du Canada - National Museum of Natural Sciences (Canada) (Musées nationaux du Canada, 1984)

Introduction to Canadian amphibians and reptiles - National Museum of Natural Sciences (Canada) (National Museums of Canada, 1984)

An introduction to geology : and its associate sciences mineralogy, fossil botany, and palaeontology - Wright, Thomas, 1809 -1884 (H. G. Bohn, 1855)

An introduction to the comparative anatomy of animals : compiled with constant reference to physiology, and elucidated by twenty copper-plates - Carus, Carl Gustav, 1789 -1869 (Longman, Rees, Orme, Brown, and Green, 1827)

An introduction to the comparative anatomy of animals compiled with constant reference to physiology, and elucidated by twenty copper-plates - Carus, Carl Gustav, 1789 -1869 (Longman, Rees, Orme, Brown, and Green, 1827)

An introduction to the study of zoology - Lindsay, B. (S. Sonnenschein, 1895)

An introduction to zoology - Gosse, Philip Henry, 1810 -1888 (Printed for the Society for promoting Christian knowledge, 1844)

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)

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

Investigations, chemical and physiological, relative to certain American Vertebrata - Jones, Joseph, 1833 -1896 (Smithsonian Institution, 1856)

Ioannis Antonii Scopoli ... Annus I-[V] historico-naturalis ... - Scopoli, Giovanni Antonio, 1723 -1788 (Sumtib. C.G. Hilscheri, 1772)

Ioannis Antonii Scopoli phil. et med. doct. ... Annus I[-V] historico-naturalis ... - Scopoli, Giovanni Antonio, 1723 -1788 (Sumtib. Christ. Gottlob Hilscheri, 1769)

Ioannis Evsebii Nierembergii ... Historia natvrae, maxime peregrinae, libris XVI. distincta. In quibus rarissima naturae arcana, etiam astronomica, & ignota indiarum animalia, quadrupedes, aues, pisces ... describuntur ... Accedunt de miris & miraculosis naturis in Europâ libri duo: item de iisdem in terrâ Hebraeis promissâ liber vnus - Nieremberg, Juan Eusebio, 1595 -1658 (ex officina Plantiniana Balthasaris Moreti, 1635)

Isis, oder, Encyclopädische Zeitung von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1817)

Isis, oder, Encyclopädische Zeitung von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1818)

Isis, oder, Encyclopädische Zeitung von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1819)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1820)