University of Illinois Urbana-Champaign

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Showing 6841–6870 of 7,508 items
Thumbnail for Geology for planning in the Springfield-Decatur region, Illinois
Geology for planning in the Springfield-Decatur region, Illinois
Bergstrom, Robert E.; Piskin, Kemal; Follmer, Leon R.

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