University of Illinois Urbana-Champaign

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Showing 1–22 of 22 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 ISGS Geonews
ISGS Geonews
Illinois State Geological Survey

Thumbnail for Geology of the Waltersburg Quadrangle, Pope County, Illinois
Geology of the Waltersburg Quadrangle, Pope County, Illinois
Weibel, C. Pius; Nelson, W. John; Oliver, Lynne B.; Esling, Steven P.