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)

Index zoologicus. An alphabetical list of names of genera and subgenera proposed for use in zoology as recorded in the "Zoological record" 1880-1900, together with other names not included in the "Nomenclator zoologicus" of S.H. Scudder - Zoological Society of London. (Printed for the Society, 1902)

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

Die insel Lussin und ihre Meeresfauna : Nach einem Sechswöchentlichen Aufenthalte - Grube, Adolph Eduard, 1812 -1880 (F. Hirt, 1864)

The Intellectual observer (Groombridge and Sons, 1864)

The Intellectual observer (Groombridge and Sons, 1865)

Intelligence in plants and animals - Gentry, Thomas G. (Thomas George), 1843 -1905 (Doubleday, Page & co, 1900)

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, 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, 1901)

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, 1914)

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

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

An introduction to the classification of animals - Huxley, Thomas Henry, 1825 -1895 (J. Churchill & sons, 1869)

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)

Introduction to the study of biology - Nicholson, Henry Alleyne, 1844 -1899 (Appleton, 1872)

An introduction to the study of fishes - Günther, Albert C. L. G. (Albert Carl Ludwig Gotthilf), 1830 -1914 (A. and C. Black, 1880)

Introduction to the study of the Foraminifera - Carpenter, William Benjamin, 1813 -1885 (Published for the Ray society by R. Hardwicke, 1862)

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

Introduction to zoology... - Patterson, Robert, 1802 -1872 (Simms and MIntyre, 1854)

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)

Introduction to zoology, for the use of schools - Patterson, Robert, 1802 -1872 (Simms and M'Intyre, A. Chambers, 1848)

Introduction to zoology : for the use of schools - Patterson, Robert, 1802 -1872 (Simms and M'Intyre, 1848)

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

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

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

The invertebrate fauna of the Firth of Forth - Herdman, W. A. Sir, (William Abbott), 1858 -1924 (Printed by M'Farlane & Erskine, 1881)

The Irish naturalist - Royal Zoological Society of Ireland. (Eason & Son, Ltd, 1894)

The Irish naturalist - Royal Zoological Society of Ireland. (Eason & Son, Ltd, 1895)

The Irish naturalist - Royal Zoological Society of Ireland. (Eason & Son, Ltd, 1904)

The Irish naturalist - Royal Zoological Society of Ireland. (Eason & Son, Ltd, 1914)

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 von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1821)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1823)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1824)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1826)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1827)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1828)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1829)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1830)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1831)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1832)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1833)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1834)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1835)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1836)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1837)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1838)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1839)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1842)

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

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1844)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1846)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1847)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1848)

Istituzioni di anatomia e fisiologia comparativa / comparata di Stefano delle Chiaie. Parte la - Delle Chiaie, S. (Stefano), 1794 -1860 (1832)

Jahrbuch der Kaiserlich Königlichen Geologischen Reichsanstalt - K.K. Geologische Reichsanstalt (Austria) (K.K. Hof- und Staats-Druckerei, 1858)

Jahres-Bericht der Schlesischen Gesellschaft für Vaterländische Cultur - Herrick, Francis Hobart, 1858 -1940 (G.P. Aderholz, 1857)

Jahres-Bericht der Schlesischen Gesellschaft für Vaterländische Cultur - Herrick, Francis Hobart, 1858 -1940 (G.P. Aderholz, 1864)

Jahres-Bericht der Schlesischen Gesellschaft für Vaterländische Cultur - Herrick, Francis Hobart, 1858 -1940 (G.P. Aderholz, 1865)

Jahresbericht des Mannheimer Vereins für Naturkunde - Mannheimer Verein für Naturkunde. (Kaufmann, 1883)

Jahresbericht des Westfälischen Provinzial-Vereins für Wissenschaft und Kunst - Westfälischer Provinzial-Verein für Wissenschaft und Kunst. (Im Selbstverlage des Vereins, 1895)