University of Illinois Urbana-Champaign

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Showing 2581–2610 of 12,153 items
Thumbnail for Hydrogeology of the Silurian dolomite aquifer in parts of Northwestern Illinois
Hydrogeology of the Silurian dolomite aquifer in parts of Northwestern Illinois
Larson, Timothy H.; Graese, Anne M.; Orozco, Phillip G.

Thumbnail for Annual register. 1929-30
Annual register. 1929-30
University of Illinois at Urbana-Champaign

Thumbnail for ISGS Geonews
ISGS Geonews
Illinois State Geological Survey