University of Illinois Urbana-Champaign

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Showing 61–90 of 607 items
Thumbnail for Wolf Lake geological field trip
Wolf Lake geological field trip
Reinertsen, David L.; Reed, Philip C.

Thumbnail for Guide to the geology of the Ferne Clyffe area : Johnson, Pope, Saline and Union Counties
Guide to the geology of the Ferne Clyffe area : Johnson, Pope, Saline and Union Counties
Devera, Joseph A.; Reinertsen, David L.; Whitaker, Stephen T.

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