University of Illinois Urbana-Champaign

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Showing 91–120 of 1,410 items
Thumbnail for Alton area : Madison County
Alton area : Madison County
Raasch, Gilbert O.

Thumbnail for Illinois Basin
Illinois Basin
Weller, James Marvin; Bell, Alfred Hannam

Thumbnail for Wolf Lake geological field trip
Wolf Lake geological field trip
Reinertsen, David L.; Reed, Philip C.

Thumbnail for Karst regions of Illinois
Karst regions of Illinois
Panno, S.V.; Weibel, C. Pius; Li, W.