University of Illinois Urbana-Champaign

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Showing 4471–4500 of 6,803 items
Thumbnail for Chemical and physical character of the Pennsylvanian sandstones in central Illinois
Chemical and physical character of the Pennsylvanian sandstones in central Illinois
Bradbury, James C.; Ostrom, Meredith O.; Lamar, John Everts

Thumbnail for Preliminary report on organization and method of investigations.
Preliminary report on organization and method of investigations.
Illinois. Coal mining investigations. (Co-operative agreement.)

Thumbnail for Illinois Technograph v. 028 (1913-1914)
Illinois Technograph v. 028 (1913-1914)
Submitter: Timothy Donohue