University of Illinois Urbana-Champaign

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Showing 3541–3570 of 3,946 items
Thumbnail for Petroleum industry in Illinois, 1974. Part I. Oil and Gas Developments
Petroleum industry in Illinois, 1974. Part I. Oil and Gas Developments
Illinois State Geological Survey; Van Den Berg, Jacob; Lawry, Thomas F.

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