University of Illinois Urbana-Champaign

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Showing 6061–6090 of 7,223 items
Thumbnail for Petrographic and coking characteristics of coal : laboratory study of Illinois coal seams nos. 5 and 6
Petrographic and coking characteristics of coal : laboratory study of Illinois coal seams nos. 5 and 6
Marshall, Charles Edward; Harrison, John A.; Simon, Jack A.; Parker, Margaret A.

Thumbnail for Mines in the Illinois portion of the Illinois-Kentucky Fluorspar District
Mines in the Illinois portion of the Illinois-Kentucky Fluorspar District
Denny, F. Brett; Nelson, W. John; Breeden, Jeremy R.; Lillie, Ross C.