University of Illinois Urbana-Champaign

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Showing 1321–1350 of 3,289 items
Thumbnail for Upper Rock River area assessment
Upper Rock River area assessment
Illinois Department of Natural Resources, Office of Scientific Research; Illinois Department of Natural Resources, Illinois State Water Survey

Thumbnail for Oil and gas development in Illinois in 1944
Oil and gas development in Illinois in 1944
Bell, Alfred Hannam; Kline, Virginia