University of Illinois Urbana-Champaign

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Showing 1801–1830 of 2,158 items
Thumbnail for Petroleum industry in Illinois, 1972. Part I. Oil and gas developments
Petroleum industry in Illinois, 1972. Part I. Oil and gas developments
Illinois State Geological Survey; Van Den Berg, Jacob; Lawry, Thomas F.

Thumbnail for The Impact of Greater Peoria Sanitary District Ammonia Discharges on Illinois River Water Quality
The Impact of Greater Peoria Sanitary District Ammonia Discharges on Illinois River Water Quality
Butts, Thomas A.; Shackleford, Dana B.; Hill, Thomas E.; Evans, Ralph L.

Thumbnail for Headwaters area assessment
Headwaters area assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis