University of Illinois Urbana-Champaign

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Showing 4591–4620 of 13,740 items
Thumbnail for ISGS Geonews
ISGS Geonews
Illinois State Geological Survey

Thumbnail for The modification of Illinois coal by low temperature distillation
The modification of Illinois coal by low temperature distillation
Parr, Samuel Wilson; Francis, Charles Kenworthy

Thumbnail for Special to farm advisers / 1961
Special to farm advisers / 1961
Submitter: Howard Ding

Thumbnail for Drying and preheating coals before coking. Part 2
Drying and preheating coals before coking. Part 2
Jackman, Harold Wesley; Helfinstine, Roy John