University of Illinois Urbana-Champaign

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Showing 4021–4050 of 6,238 items
Thumbnail for Sugar-Pecatonica area assessment
Sugar-Pecatonica area assessment
Submitter: Steven Mccauley

Thumbnail for Petroleum industry in Illinois, 1967
Petroleum industry in Illinois, 1967
Van Den Berg, Jacob; Lawry, T.F.; Mast, Richard F.

Thumbnail for Distribution of the forms of sulphur in the coal bed
Distribution of the forms of sulphur in the coal bed
Yancey, Harry Fagan; Fraser, Thomas