University of Illinois Urbana-Champaign

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Showing 781–810 of 868 items
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.

Thumbnail for Off-line. 3-5
Off-line. 3-5
Submitter: Howard Ding