University of Illinois Urbana-Champaign

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Showing 7321–7350 of 7,512 items
Thumbnail for Du Page River area assessment
Du Page River area assessment
Submitter: Steven Mccauley

Thumbnail for It says here / 1953-59
It says here / 1953-59
Submitter: Howard Ding

Thumbnail for Petroleum industry in Illinois, 1974. Part I. Oil and Gas Developments
Petroleum industry in Illinois, 1974. Part I. Oil and Gas Developments
Illinois State Geological Survey; Van Den Berg, Jacob; Lawry, Thomas F.