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, 1881)

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, 1894)

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, 1919)

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

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1919)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1920)

An illustrated dictionary of medicine, biology and allied sciences - Gould, George M. (George Milbry), 1848 -1922 (Balliére, Tindall & Cox, 1894)

An illustrated dictionary of medicine, biology and allied sciences - Gould, George M. (George Milbry), 1848 -1922 (P. Blakiston's Son & Co, 1900)

An illustrated dictionary of medicine, biology and allied sciences ... by George M. Gould. 5th ed., with additions and corrections - Gould, George M. (George Milbry), 1848 -1922 (P. Blakiston's Son, 1907)

An illustrated dictionary of medicine, biology and allied sciences - Gould, George M. (George Milbry), 1848 -1922 (P. Blakiston, Son & Co, 1894)

An illustrated guide to the flowering plants of the middle Atlantic and New England states (excepting the grasses and sedges) the descriptive text written in familiar language - Stevens, George T. (George Thomas), 1832 -1921 (Dodd, Mead and company, 1910)

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

An illustrated manual of British birds - Saunders, Howard, 1835 -1907 (Gurney and Jackson, 1889)

L'Illustration horticole : journal spécial des serres et des jardins, ou choix raisonné des plantes les plus intérressantes sous le rapport ornemental, comprenant leur histoire complete, leur description comparée, leur figure et leur culture - Lemaire, Charles Antoine, 1801 -1871 (Imprimerie et lithographie de F. et E. Gyselnyck, 1891)

Illustriertes Handwörterbuch der Botanik - Linsbauer, Karl, 1872 -1934 (W. Engelmann, 1917)

Improving the quality of wheat - Lyon, T. L. (Thomas Lyttleton), 1869 -1938 (Govt. print. off, 1905)

In memoriam : physiological and pathological researches: a reprint of the principal scientific writings of T.R. Lewis - Aitken, William, 1825 -1892 (Lewis Memorial Committee, 1888)

In northern mists; Arctic exploration in early times - Nansen, Fridtjof, 1861 -1930 (Frederick A. Stokes co, 1911)

In search of the rain forest - Duke University Press. (Duke University Press, 2003)

In the field : the bulletin of the Field Museum of Natural History - Field Museum of Natural History. (Field Museum of Natural History, 1996)

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 Diatomaceaearum, 1896-99 - Chase, H. H. (Harvey Henderson), 1849 -1915 (1900)

Index of mosses : a catalog of the names and citations for new taxa, combinations, and names for mosses published during the years 1963 through 1989 with citations of previously published basionyms and replaced names, together with lists of the names of authors of the names and lists of names of publications used in the citations - Magill, Robert E. (Missouri Botanical Garden, 1992)

An index to the islands of the Pacific Ocean, a handbook to the chart on the walls of the Bernice Pauahi Bishop Museum of Polynesian Ethnology and Natural History - Brigham, William Tufts, 1841 -1926 (Bishop Museum Press, 1900)

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)

India rubber world (Bill Brothers Publishing Corp, 1905)

Influence of nitrates on nitrogen-assimilating bacteria - Hills, Thomas Lawrence, 1890 - (Govt. print. off, 1918)

Informational letter - Alberta. Energy Resources Conservation Board. (Energy Resources Conservation Board, 1989)

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)

Inoculation, a preventive of swine plague - Billings, F. S. (Frank Seaver), 1845 -1912 (The author, 1892)

Die Insekten - Graber, Vitus, 1844 -1892 (R. Oldenbourg, 1877)

Insektenbörse (Alfred Kernen, 1918)

Insektenbörse (Alfred Kernen, 1919)