University of Illinois Urbana-Champaign

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Showing 841–870 of 4,600 items
Thumbnail for Ground-water geology of selected wetlands in Union and Alexander Counties, Illinois
Ground-water geology of selected wetlands in Union and Alexander Counties, Illinois
McKay, E. Donald, III; Elzeftawy, Atef; Cartwright, Keros

Thumbnail for ISGS Geonews
ISGS Geonews
Illinois State Geological Survey

Thumbnail for Illinois mineral industry in 1941
Illinois mineral industry in 1941
Voskuil, Walter Henry; Stevens, Douglas F.; Oliver, G.N.

Thumbnail for Bedrock topography of Columbia Quadrangle, Monroe and St. Clair Counties, Illinois
Bedrock topography of Columbia Quadrangle, Monroe and St. Clair Counties, Illinois
Panno, Samuel V.; Angel, Julie C.; Grimley, David A.; Weibel, C. Pius; Stiff, Barbara J.

Thumbnail for Ground-water/surface Water Interactions at Sand Lake, Mason County, Illinois
Ground-water/surface Water Interactions at Sand Lake, Mason County, Illinois
Hlinka, Kenneth J.; Buck, Andrew G.; Clark, Gary R.