University of Illinois Urbana-Champaign

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Showing 2311–2340 of 2,360 items
Thumbnail for Mackinaw River area assessment.
Mackinaw River area assessment.
Illinois Department of Natural Resources

Thumbnail for Petroleum industry in Illinois, 1972. Part I. Oil and gas developments
Petroleum industry in Illinois, 1972. Part I. Oil and gas developments
Illinois State Geological Survey; Van Den Berg, Jacob; Lawry, Thomas F.

Thumbnail for Electrical Treatment of Clays
Electrical Treatment of Clays
Schifano, Vito Christian