University of Illinois Urbana-Champaign

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Showing 271–300 of 963 items
Thumbnail for Grand Tower limestone (Devonian) of southern Illinois
Grand Tower limestone (Devonian) of southern Illinois
Meents, Wayne Franklin; Swann, David Henry joint author

Thumbnail for Faculty letter / no. 223-283
Faculty letter / no. 223-283
Submitter: William Ingram