University of Illinois Urbana-Champaign

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Showing 6871–6900 of 6,988 items
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 Du Page River area assessment
Du Page River area assessment
Submitter: Steven Mccauley

Thumbnail for Illinois dairy digest. 9-20
Illinois dairy digest. 9-20
Submitter: Howard Ding