University of Illinois Urbana-Champaign

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Showing 8641–8670 of 9,362 items
Thumbnail for Big Muddy River area assessment
Big Muddy River area assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis; Illinois Department of Natural Resources. State Geological Survey Division

Thumbnail for An investigation of twist drills
An investigation of twist drills
Benedict, Bruce Willet; Hershey, Albert Eby; Lukens, William Penn