University of Illinois Urbana-Champaign

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Showing 3421–3450 of 12,552 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 Sugar-Pecatonica area assessment
Sugar-Pecatonica area assessment
Submitter: Steven Mccauley