University of Illinois Urbana-Champaign

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Showing 871–900 of 13,532 items
Thumbnail for Depositional history of the Pennsylvanian rocks in Illinois
Depositional history of the Pennsylvanian rocks in Illinois
Illinois State Geological Survey Coal Section; Jacobson, Russell J.

Thumbnail for Geologic studies to identify the source for high levels of radium and barium in Illinois ground-water supplies: a preliminary report
Geologic studies to identify the source for high levels of radium and barium in Illinois ground-water supplies: a preliminary report
Gilkeson, Robert H.; Specht, Susan A.; Cartwright, Keros; Griffin, Robert Alfred; Larson, Thurston Eric