University of Illinois Urbana-Champaign

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Showing 2251–2280 of 3,843 items
Thumbnail for Hydrogeologic and geochemical studies of selected natural radioisotopes and barium in groundwater in Illinois
Hydrogeologic and geochemical studies of selected natural radioisotopes and barium in groundwater in Illinois
Gilkeson, Robert H.; Cartwright, Keros; Cowart, James B.; Holtzman, Richard B.

Thumbnail for Rebirth of Rural America: Rural Migration in the Midwest
Rebirth of Rural America: Rural Migration in the Midwest
Sofranko, Andrew J.; Williams, James D.; Fliegel, Frederick C.; Stuart, Nina G.