University of Illinois Urbana-Champaign

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Showing 1921–1950 of 3,670 items
Thumbnail for Evolution of a Peat-Contemporaneous Channel: The Galatia Channel, Middle Pennsylvanian, of the Illinois Basin
Evolution of a Peat-Contemporaneous Channel: The Galatia Channel, Middle Pennsylvanian, of the Illinois Basin
Nelson, W. John; Elrick, Scott D.; DiMichele, William A.; Ames, Philip R.

Thumbnail for Special to farm advisers / 1952
Special to farm advisers / 1952
Submitter: Howard Ding

Thumbnail for Vermilion River area assessment
Vermilion River area assessment
Illinois Department of Natural Resources