University of Illinois Urbana-Champaign

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Showing 1351–1380 of 1,669 items
Thumbnail for Headwaters area assessment
Headwaters area assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis

Thumbnail for Technograph. 52-54 (1937 - 1940)
Technograph. 52-54 (1937 - 1940)
Submitter: William Ingram

Thumbnail for Development of paleobotany in the Illinois Basin
Development of paleobotany in the Illinois Basin
Phillips, Tom Lee; Pfefferkorn, Hermann W.; Peppers, Russel A.

Thumbnail for Lake Michigan bibliography Volume 1
Lake Michigan bibliography Volume 1
Holm, Nancy Peterson; Morgan, Beth McArdle

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.