University of Illinois Urbana-Champaign

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Showing 1981–2010 of 18,891 items
Thumbnail for Mineral production in Illinois in 1954
Mineral production in Illinois in 1954
Voskuil, Walter Henry; Busch, Willis L.

Thumbnail for Illinois Water and Climate Summary, 2002
Illinois Water and Climate Summary, 2002
Water and Atmospheric Resource Monitoring Program

Thumbnail for Peat and humus in Illinois
Peat and humus in Illinois
Hester, Norman C.; Lamar, J.E.