University of Illinois Urbana-Champaign

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Showing 4591–4620 of 17,445 items
Thumbnail for Subsurface geochemical investigation in western and southern Illinois : a pilot study
Subsurface geochemical investigation in western and southern Illinois : a pilot study
Erickson, Ralph Leroy; Erickson, M.S.; Chazin, Barbara; Baxter, James W.; Masters, J.M.; Eidel, J. James

Thumbnail for Big Rivers area assessment
Big Rivers area assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis; Illinois Department of Natural Resources. State Geological Survey Division