University of Illinois Urbana-Champaign

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Showing 31–60 of 1,229 items
Thumbnail for Bedrock geology of Harrisburg Quadrangle, Saline County, Illinois
Bedrock geology of Harrisburg Quadrangle, Saline County, Illinois
Denny, F. Brett; Jacobsen, Russell J.; Nelson, W. John

Thumbnail for Distribution of boghead algae in Illinois Basin coal beds
Distribution of boghead algae in Illinois Basin coal beds
Peppers, Russel Allen; Harvey, Richard David

Thumbnail for The Sandwich Fault Zone of northern Illinois
The Sandwich Fault Zone of northern Illinois
Kolata, Dennis R.; Buschbach, T.C.; Treworgy, Janis D.