Index Rafinesquianus : the plant names published by C. S. Rafinesque with reductions, and a consideration of his methods, objectives, and attainments - Merrill, Elmer D. (Elmer Drew), 1876 -1956 (Arnold Arboretum of Harvard University, 1949)

Index supplementarius locorum natalium specialium plantarum nonnullarum vascularium in provincia Arctica Norvegiae sponte nascentium - Norman, J. M. (Johannes Musaeus), 1823 -1903 (Typ. expressit J.C. Manglie, 1864)

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 review and journal of foreign science and the arts (1837)

Indice da Flora fluminensis - Cruz, Mário (Impr. Nacional, 1881)

Information on food and cover plants for wild ducks, upland game birds, fish, muskrats and other wild life - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Clyde B. Terrell, 1931)

Inland wetlands of the United States : evaluated as potential registered natural landmarks - Niering, William A. (National Park Service : may be purchased from the Supt. of Docs., Govt. Print. Off, 1975)

Inpaws journal - Indiana Native Plant; Wildflower Society. (Indiana Native Plant and Wildflower Society, 2013)

Inpaws journal - Indiana Native Plant; Wildflower Society. (Indiana Native Plant and Wildflower Society, 2017)

Insect life; an introduction to nature study and a guide for teachers, students and others interested in out-of-door life - Comstock, John Henry, 1849 -1931 (D. Appleton and Company, 1901)

Insect life; an introduction to nature-study and a guide for teachers, students, and others interested in out-of-door life - Comstock, John Henry, 1849 -1931 (D.Appleton and Company, 1897)

Insectivorous plants - Darwin, Charles, 1809 -1882 (J. Murray, 1875)

Insectivorous plants - Darwin, Charles, 1809 -1882 (D. Appleton, 1895)

Insectivorous plants - Darwin, Charles, 1809 -1882 (D. Appleton, 1896)

Insectivorous plants - Darwin, Charles, 1809 -1882 (J. Murray, 1888)