University of Illinois Urbana-Champaign

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Showing 1381–1410 of 7,605 items
Thumbnail for By-product gypsum in Illinois--a new resource?
By-product gypsum in Illinois--a new resource?
Ehrlinger, Henry P., III; Bohor, Bruce Forbes; Finger, G.C.

Thumbnail for Annual register. 1925-26
Annual register. 1925-26
University of Illinois at Urbana-Champaign

Thumbnail for ISGS Geonews
ISGS Geonews
Illinois State Geological Survey