University of Illinois Urbana-Champaign

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Showing 4291–4320 of 4,457 items
Thumbnail for Fox River area assessment
Fox River area assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis

Thumbnail for Petroleum industry in Illinois, 1984. Oil and gas developments
Petroleum industry in Illinois, 1984. Oil and gas developments
Van Den Berg, Jacob; Treworgy, Janis D.; Elyn, Jaclyn Rendall

Thumbnail for Petroleum industry in Illinois, 1975. Part I. Oil and Gas Developments
Petroleum industry in Illinois, 1975. Part I. Oil and Gas Developments
Illinois State Geological Survey; Van Den Berg, Jacob; Lawry, Thomas F.