University of Illinois Urbana-Champaign

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Showing 9151–9180 of 17,121 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 Preliminary report on organization and method of investigations.
Preliminary report on organization and method of investigations.
Illinois. Coal mining investigations. (Co-operative agreement.)

Thumbnail for Kankakee River area assessment
Kankakee River area assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis