Illinois Audubon bulletin - Illinois Audubon Society. (Illinois Audubon Society, 1974)

Illinois birds, Wood warblers - Graber, Jean W. (Jean Weber), 1924 -2015 (State of Illinois, Dept. of Registration and Education, Natural History Survey Division, 1983)

The Illinois breeding bird atlas - U.S. Fish; Wildlife Service (Illinois Natural History Survey, 2004)

The Illinois Natural History Survey reports - Illinois. Natural History Survey Division (Natural History Survey, Illinois Institute of Natural Resources, 2001)

Illinois River Bluffs area assessment - Illinois. Dept. of Natural Resources. (Illinois Dept. of Natural Resources, 1998)

Illustrations of the nests and eggs of birds of Ohio : with text - Jones, Howard, 1853 -1945 ([s.n.], 1886)

Illustrirtes Thierleben. Für Schule und Haus - Dümling, Hermann. (G. Brumder, 1879)

Importance, preservation and management of riparian habitat: a symposium, Tucson, Arizona, July 9, 1977 - Johnson, R. Roy (Raymond Roy), 1932 - (Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1977)

In the Acadian land ; nature studies - McLeod, Robert Randall. (B. Whidden, 1899)

In the Acadian land nature studies - McLeod, Robert R. (Robert Randall), 1839 -1909 (B. Whidden, 1899)

In the open; intimate studies and appreciations of nature - Fuertes, Louis Agassiz, 1874 -1927 (P. Elder & Company, 1908)

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 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 generum mammalium: a list of the genera and families of mammals - Merriam, C. Hart (Clinton Hart), 1855 -1942 (Govt. Print. Off, 1904)

Index to papers relating to the food of birds : by members of the Biological Survey in publications of the United States Department of Agriculture, 1885-1911 - McAtee, W. L. (Waldo Lee) 1883 -1962 (U.S. Dept.of Agriculture, Biological Survey, 1913)

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)

Indian medicinal plants - Basu, Baman Das, 1867 -1930 (Sudhindra Nath Basu, Pâninî office; [etc., etc.], 1918)

The influence of distribution and ecology on the thermoregulation of small birds - Yarbrough, Charles Gerald, 1939 - (1970)

Inpaws journal - Indiana Native Plant; Wildflower Society. (Indiana Native Plant and Wildflower Society, 2012)

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

Intelligence in plants and animals: being a new edition of the author's privately issued "Soul and immortality." - Gentry, Thomas G. (Thomas George), 1843 -1905 (Doubleday, Page & Co, 1900)

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

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1934)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1935)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1936)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1938)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1939)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1940)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1942)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1945)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1947)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1949)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1950)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1952)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1953)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1954)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1955)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1956)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1957)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1958)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1959)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1960)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1961)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1962)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1963)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1964)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1965)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1967)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1968)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1969)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1970)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1971)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1972)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1973)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1974)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1975)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1976)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1977)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1978)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1979)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1980)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1981)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1982)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1983)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1984)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1985)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1986)

Iowa bird life - Iowa Ornithologists' Union. (Iowa Ornithologists' Union, 1987)