University of Illinois Urbana-Champaign

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Showing 1771–1800 of 5,007 items
Thumbnail for Vascular Flora of Iroquois County Conservation Areas, Iroquois County, Illinois
Vascular Flora of Iroquois County Conservation Areas, Iroquois County, Illinois
Phillippe, Loy R.; Feist, Mary Ann; Larimore, Richard L.; Busemeyer, Daniel T.; Marcum, Paul B.; Carroll, Connie J.; Hunter, Katherine J.; Ebinger, John E.

Thumbnail for Illinois mineral industry in 1975
Illinois mineral industry in 1975
Samson, Irma; Dingwell, Amy G.

Thumbnail for Petroleum industry in Illinois, 1958
Petroleum industry in Illinois, 1958
Bell, Alfred Hannam; Mast, Richard F.; Oros, Margaret O.; Sherman, Carl W.; Van Den Berg, Jacob