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)

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, 1877)

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

The illustrated natural history - Wood, J. G. (John George), 1827 -1889 (G. Routledge, 1880)

The illustrated natural history - Goode, G. Brown (George Brown), 1851 -1896 (Routledge, Warne and Routledge, 1862)

Illustrirtes Thierleben - Brehm, Alfred Edmund, 1829 -1884 (Verlag des Bibliogr. Instituts, 1864)

Illustrirtes Thierleben - Brehm, Alfred Edmund, 1829 -1884 (Verlag des Bibliogr. Instituts, 1866)

Important bird areas in Kenya - National Museums of Kenya. Department of Ornithology. (Nature Kenya, East Africa Natural History Society, 1999)

In the Andamans and Nicobars; the narrative of a cruise in the schooner "Terrapin", with notices of the islands, their fauna, ethnology, etc - Kloss, C. Boden (Cecil Boden), 1877 -1949 (J. Murray, 1903)

Index ad Caroli Luciani Bonaparte Conspectum generum avium - Bonaparte, Charles-Lucien, 1803 -1857 (apud E. J. Brill, 1865)

Index animalium; sive, Index nominum quae ab A. D. MDCCLVIII generibus et speeiebus animalium imposita sunt - Sherborn, Charles Davies, 1861 -1942 (e typographio academico, 1801)

Index animalium; sive, Index nominum quae ab A. D. MDCCLVIII generibus et speeiebus animalium imposita sunt - Sherborn, Charles Davies, 1861 -1942 (e typographio academico, 1902)

Index generum avium. A list of the genera and subgenera of birds - Waterhouse, Frederick Herschel, 1845 -1919 (R. H. Porter, 1889)

Index generum avium : a list of the genera and subgenera of birds - Waterhouse, Frederick Herschel, 1845 -1919 (R.H. Porter, 1889)

Index to the genera of birds - McGregor, Richard C. (Richard Crittenden), 1871 -1936 (Bureau of Printing, 1920)

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 zu L. Reichenbach's ornithologischen Werken - Reichenbach, H. G. Ludwig (Heinrich Gottlieb Ludwig), 1793 -1879 (R. Freidlander, 1879)

The insectivorous birds of Victoria, with chapters on birds more or less useful - Hall, Robert, 1867 -1949 (The Author, 1900)

Insecutor inscitiae menstruus ([Harrison G. Dyar], 1918)

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. 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 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)

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

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1841)

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

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