University of Illinois Urbana-Champaign

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Showing 2221–2250 of 4,760 items
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

Thumbnail for Oil and gas development in Illinois in 1943
Oil and gas development in Illinois in 1943
Bell, Alfred Hannam; Carter, Charles William