University of Illinois Urbana-Champaign

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Showing 811–840 of 2,176 items
Thumbnail for Petroleum industry in Illinois, 1977. Part 1. Oil and gas developments
Petroleum industry in Illinois, 1977. Part 1. Oil and gas developments
Illinois State Geological Survey; Van Den Berg, Jacob; Lawry, Thomas F.

Thumbnail for Prairie Research Institute 2011 Report
Prairie Research Institute 2011 Report
Prairie Research Institute

Thumbnail for Potential surface water reservoirs of north-central Illinois
Potential surface water reservoirs of north-central Illinois
Dawes, Julius Henry; Terstriep, Michael Lee