University of Illinois Urbana-Champaign

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Showing 1–30 of 1,405 items
Thumbnail for Glacial tills of Northwestern Illinois
Glacial tills of Northwestern Illinois
Illinois State Geological Survey; Frye, John Chapman

Thumbnail for The Current Status of Napaea dioica L. in Illinois
The Current Status of Napaea dioica L. in Illinois
Robertson, Kenneth, R.; Phillippe, Loy R.

Thumbnail for Directory of Illinois mineral producers 1992
Directory of Illinois mineral producers 1992
Samson, Irma; Masters, John M.