University of Illinois Urbana-Champaign

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Showing 421–450 of 1,633 items
Thumbnail for Drying and preheating coals before coking. Part 2
Drying and preheating coals before coking. Part 2
Jackman, Harold Wesley; Helfinstine, Roy John

Thumbnail for Annual register. 1920-21
Annual register. 1920-21
University of Illinois at Urbana-Champaign

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 Alumni news / 13
Alumni news / 13
University of Illinois at Urbana-Champaign. Deptartment of Urban and Regional Planning