University of Illinois Urbana-Champaign

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Showing 1141–1170 of 2,770 items
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 An investigation of twist drills
An investigation of twist drills
Benedict, Bruce Willet; Hershey, Albert Eby; Lukens, William Penn