Humboldt; Monatsschrift für die gesamten Naturwissenschaften - Damer, Otto, 1839 -1916 (F. Enke, 1887)

Iacobi Braak, Groningani, S.S. Theol. in Academia, quae Groningae est, studiosi, Responsio ad quaestionem ab ordine disciplanarum mathematicarum et physicarum in Academia Groningana, anno [1821] : propositam, "quaeritur catalogus avium, in provincia Groningana indigenarum, addita accurata illarum descriptione, differentia generica et specifica, vivendi ratione et moribus, allatis unius alteriusque scriptoris imaginibus et adiuncta iconum Nozemanniorum critica" : quae praemio ornata est - Braak, Jacob. (s.n, 1821)

Iagttagelser over entoparasitiske muscidelarver hos Arthropeder - Nielsen, Jens Christian, 1881 -1918 (G.C. Ursin, 1909)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1859)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1860)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1861)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1862)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1863)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1864)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1865)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1866)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1867)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1869)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1870)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1871)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1872)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1873)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1874)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1875)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1876)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1877)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1878)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1882)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1883)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1994)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1885)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1887)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1889)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1890)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1894)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1895)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1896)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1899)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1900)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1901)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1903)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1904)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1905)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1908)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1909)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1910)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1911)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1912)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1913)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1915)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1917)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1918)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1919)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1920)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1921)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1922)

Ice-bound on Kolguev; a chapter in the exploration of Arctic Europe, to which is added a record of the natural history of the island - Trevor-Battye, Aubyn Bernard Rochfort, 1855 -1922 (A. Constable and Company, 1895)

Ice-bound on Kolguev : a chapter in the exploration of Arctic Europe to which is added a record of the natural history of the island - Trevor-Battye, Aubyn Bernard Rochfort, 1855 -1922 (A. Constable, 1895)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1952)

An illustrated manual of British birds - Saunders, Howard, 1835 -1907 (Gurney and Jackson, 1899)

Illustrated natural history of the animal kingdom : being a systematic and popular description of the habits, structure, and classification of animals from the highest to the lowest forms, with their relations to agriculture, commerce, manufactures, and the arts - Goodrich, Samuel G. (Samuel Griswold), 1793 -1860 (Derby & Jackson, 1859)

Illustrated natural history of the animal kingdom, being a systematic and popular description of the habits, structure, and classification of animals from the highest to the lowest forms, with their relations to agriculture, commerce, manufactures, and the arts - Goodrich, Samuel G. (Samuel Griswold), 1793 -1860 (Derby & Jackson, 1859)

Illustrations of British ornithology - Selby, Prideaux John, 1788 -1867 (Printed for the proprietor, and published by W.H. Lizars ; London : Longman, Rees, Orme, Brown, Green and Longman ; Dublin : W. Curry Jun. & Co, 1833)

Illustrations of British ornithology. Part first, Land birds - Selby, Prideaux John, 1788 -1867 (Printed for Archibald Constable & Co. ; London : Hurst, Robinson, & Co, 1825)

Illustrations of instinct, deduced from the habits of British animals - Couch, Jonathan, 1789 -1870 (J. van Voorst, 1847)

Illustrirte naturgeschichte des thierreichs - Poeppig, Eduard, 1798 -1868 (J.J. Weber, 1851)

Index-catalogue of the birds in the Hancock collection - Howse, Richard. (Printed for the Natural History Society, 1899)

Index seminum in hortis Musei Parisiensis anno ... collectorum - Muséum national d'histoire naturelle (France) (Museum National d"Histoire Naturelle, Service de Culture, 1892)

Insect miscellanies - Rennie, James, 1787 -1867 (C. Knight, 1831)

Insect miscellanies ... - Rennie, James, 1787 -1867 (Nattali and Bond, 1838)

Insect transformations - Rennie, James, 1787 -1867 (Lilly & Wait, 1831)

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

Insect transformations ... - Rennie, James, 1787 -1867 (Nattali and Bond, 1838)

Instruccoes praticas sobre o modo de colligir, preparar e remetter productos zoologicos para o museu de Lisboa - Barbosa du Bocage, J. V. (José Vicente), 1823 -1908 (Imprensa Nacional, 1862)

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

International convention for the protection of birds - Herman, Ottó, 1835 -1914 (V. Hornyánszky, court printer, 1907)

The international convention for the protection of birds concluded in 1902; and Hungary. Historical sketch - Herman, Ottó, 1835 -1914 (W. Hornyánszky, court printer, 1907)

An introduction to the natural history of birds : being the article "Ornithology," from the seventh edition of the Encyclopaedia Britannica : with one hundred and thirty-five figures - Wilson, James, 1795 -1856 (Adam and Charles Black, 1839)

An introduction to the natural history of birds; being the article "Ornithology", from the seventh edition of the Encyclopedia Britannica ... - Wilson, James, 1795 -1856 (A. and C. Black, 1839)

An introduction to the study of birds; or, The elements of ornithology, on scientific principles. With a particular notice of the birds mentioned in Scripture - Martin, William Charles Linnæus, 1798 -1864 (Religious Tract Society, 1835)

Inventaire des espèces d'oiseaux occasionnelles en France - Dubois, Philippe Jacques (1986)

The Irish naturalist - Royal Zoological Society of Ireland. (Eason & Son, Ltd, 1898)

The Irish naturalist - Royal Zoological Society of Ireland. (Eason & Son, Ltd, 1902)

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

The Irish naturalist - Royal Zoological Society of Ireland. (Eason & Son, Ltd, 1922)

The Irish naturalist - Royal Zoological Society of Ireland. (Eason & Son, Ltd, 1924)

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, 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)