University of Illinois Urbana-Champaign

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Showing 6601–6630 of 10,538 items
Thumbnail for Petroleum industry in Illinois, 1967
Petroleum industry in Illinois, 1967
Van Den Berg, Jacob; Lawry, T.F.; Mast, Richard F.

Thumbnail for Sulfur reduction of Illinois coals--washability studies
Sulfur reduction of Illinois coals--washability studies
Helfinstine, Roy John; Shimp, N.F.; Simon, J.A.; Hopkins, M.E.