University of Illinois Urbana-Champaign

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Showing 5191–5220 of 46,453 items
Thumbnail for Chemical and physical character of the Pennsylvanian sandstones in central Illinois
Chemical and physical character of the Pennsylvanian sandstones in central Illinois
Bradbury, James C.; Ostrom, Meredith O.; Lamar, John Everts

Thumbnail for Bedrock aquifers of northeastern Illinois
Bedrock aquifers of northeastern Illinois
Hughes, George M.; Kraatz, Paul; Landon, Ronald A.