University of Illinois Urbana-Champaign

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Showing 1171–1200 of 5,362 items
Thumbnail for Heat drying coals at moderate temperatures before coking
Heat drying coals at moderate temperatures before coking
Jackman, Harold Wesley; Helfinstine, Roy John

Thumbnail for Additional Content
Additional Content
Submitter: Howard Ding

Thumbnail for Sand and gravel resources of Boone County, Illinois
Sand and gravel resources of Boone County, Illinois
Hunter, Ralph E.; Kempton, John P.