University of Illinois Urbana-Champaign

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Showing 2401–2430 of 2,838 items
Thumbnail for Oil and gas development in Illinois during 1953
Oil and gas development in Illinois during 1953
Bell, Alfred Hannam; Kline, Virginia

Thumbnail for Big Rivers area assessment
Big Rivers area assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis; Illinois Department of Natural Resources. State Geological Survey Division