Field guide to butterflies of Illinois - Bouseman, John K. (Illinois Natural History Survey, 2001)

Field guide to silkmoths of Illinois - Bouseman, John K. (Illinois Natural History Survey, 2002)

Field guide to the skipper butterflies of Illinois - Bouseman, John K. (Illinois Natural History Survey, 2006)

Fieldiana. Botany - Field Museum of Natural History. (Chicago Natural History Museum, 1998)

Fishery bulletin - United States. National Oceanic; Atmospheric Administration. (The Service, 1972)

Florida scientist - Florida Academy of Sciences. (Florida Academy of Sciences, 1991)

Florida scientist - Florida Academy of Sciences. (Florida Academy of Sciences, 1993)

Florida scientist - Florida Academy of Sciences. (Florida Academy of Sciences, 2004)

Flowers and insects : contributions to an account of the ecological relations of the entomophilous flora and the anthophilous insect fauna of the neighborhood of Carlinville, Illinois, 1889-1896 - Robertson, Charles, 1858 - (1896)

Flowers and insects; lists of visitors of four hundred and fifty-three flowers - Robertson, Charles, 1858 -1935 (n.p, 1928)

Food habits of some Arctic birds and mammals - Hanson, Harold C. (Harold Carsten), 1917 -2003 (Field Museum of Natural History, 1938)

Food of the scaled quail (Preliminary report) - U.S. Fish; Wildlife Service (U.S. Dept. of the Interior, Fish and Wildlife Service, 1937)

Foraging selectivity in adult butterflies : morphological, ecological, and physiological factors affecting flower choice - May, Peter Gregory, 1955 - (1985)

Forest lepidoptera of Canada - Canada. Dept. Of Forestry. Forest Entomology; Pathology Branch (Queen's Printer, 1958)

Forest Lepidoptera of southern Ontario and their parasites, received and reared at the Ottawa Forest Insect Survey Laboratory from 1937 to 1948 - Canada. Department of Agriculture. Forest Biology Division. (1952)

Forest protection; guide to lectures delivered at the Biltmore Forest School - Schenck, Carl Alwin, 1868 -1955 (The Inland Press, 1909)

Die forstinsekten Mitteleuropas. Ein lehr- und handbuch - Nitsche, Hinrich, 1845 -1902 (P. Parey, 1931)

Die fossilen insekten und die phylogenie der rezenten formen; ein handbuch für paläontologen und zoologen - Handlirsch, Anton, 1865 -1935 (W. Engelmann, 1908)

Fr. Berge's Schmetterlingsbuch nach dem gegenwärtigen Stande der Lepidopterologie neu bearb. und hrsg. von Professor Dr. H. Rebel - Rebel, H. (Hans), 1861 - (E. Schweizerbart, 1910)

Frail children of the air : excursions into the world of butterflies - Scudder, Samuel Hubbard, 1837 -1911 (Houghton, Mifflin and Company, 1895)

Frail children of the air; excursions into the world of butterflies - Scudder, Samuel Hubbard, 1837 -1911 (Houghton, Mifflin and company, 1895)

Frail children of the air; excursions into the world of butterflies - Scudder, Samuel Hubbard, 1837 -1911 (Houghton, Mifflin and Company, 1897)

Fritz Müller, Werke, Briefe und Leben - Möller, Alfred, 1860 -1922 (G. Fischer, 1915)

The Fruhstorfer collection of butterfiles : catalogue of types with general account and list of the more interesting forms - Fruhstorfer Collection of Butterflies. (s.n, 1922)