University of Illinois Urbana-Champaign

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Showing 1–13 of 13 items
Thumbnail for Buried bedrock surface of Illinois [map]
Buried bedrock surface of Illinois [map]
Herzog, Beverly L.; Stiff, Barbara J.; Chenoweth, Cheri A.; Warner, Kelly L.; Sieverling, Jennifer B.; Avery, Charles

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ISGS Geonews
Illinois State Geological Survey

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Illinois' ice age legacy
Killey, Myrna M.

Thumbnail for ISGS Geonews
ISGS Geonews
Illinois State Geological Survey

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Headwaters area assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis