University of Illinois Urbana-Champaign

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Showing 511–540 of 636 items
Thumbnail for Glaciation and origin of the geest in the driftless area of northwestern Illinois
Glaciation and origin of the geest in the driftless area of northwestern Illinois
Willman, Harold Bowen; Frye, John Chapman; Glass, Herbert David

Thumbnail for Lower Des Plaines River area assessment
Lower Des Plaines River area assessment
Submitter: Steven Mccauley