University of Illinois Urbana-Champaign

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Showing 631–660 of 3,804 items
Thumbnail for The geology of Hardin County, and the adjoining part of Pope County.
The geology of Hardin County, and the adjoining part of Pope County.
Weller, Stuart; Butts, Charles; Currier, Louis W.; Salisbury, Rollin D.

Thumbnail for Geology of the Waltersburg Quadrangle, Pope County, Illinois
Geology of the Waltersburg Quadrangle, Pope County, Illinois
Weibel, C. Pius; Nelson, W. John; Oliver, Lynne B.; Esling, Steven P.

Thumbnail for 2012 Report
2012 Report
Prairie Research Institute

Thumbnail for Prairie Research Institute 2011 Report
Prairie Research Institute 2011 Report
Prairie Research Institute

Thumbnail for Mines in the Illinois portion of the Illinois-Kentucky Fluorspar District
Mines in the Illinois portion of the Illinois-Kentucky Fluorspar District
Denny, F. Brett; Nelson, W. John; Breeden, Jeremy R.; Lillie, Ross C.

Thumbnail for Illinois mineral industry in 1941
Illinois mineral industry in 1941
Voskuil, Walter Henry; Stevens, Douglas F.; Oliver, G.N.

Thumbnail for Secondary recovery in Illinois
Secondary recovery in Illinois
Squires, Frederick; Luckhardt, Paul G.; Bell, Alfred Hannam