University of Illinois Urbana-Champaign

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Showing 391–420 of 2,971 items
Thumbnail for ISGS Geonews
ISGS Geonews
Illinois State Geological Survey

Thumbnail for Illinois mineral industry, 1996-1998
Illinois mineral industry, 1996-1998
Ipe, Viju C.; Bhagwat, Subhash

Thumbnail for ISGS Geonews
ISGS Geonews
Illinois State Geological Survey

Thumbnail for A field guide to the Illinois Caverns State Natural Area
A field guide to the Illinois Caverns State Natural Area
Panno, S.V.; Greenberg, Sallie E.; Weibel, C. Pius; Gillespie, Patricia K.