University of Illinois Urbana-Champaign

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Showing 6001–6030 of 6,317 items
Thumbnail for Catalog of Devonian and deeper tests in central Illinois
Catalog of Devonian and deeper tests in central Illinois
Stevenson, D.L.; Keys, John N.; Cluff, Robert M.

Thumbnail for Petroleum industry in Illinois, 1976. Part I. Oil and gas developments
Petroleum industry in Illinois, 1976. Part I. Oil and gas developments
Illinois State Geological Survey; Van Den Berg, Jacob; Lawry, Thomas F.

Thumbnail for Illinois Technograph v. 030 (1915-1916)
Illinois Technograph v. 030 (1915-1916)
Submitter: Timothy Donohue