University of Illinois Urbana-Champaign

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Showing 5281–5310 of 8,609 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 Mississippian stratotypes
Mississippian stratotypes
Collinson, Charles; Baxter, James W.; Norby, R.D.; Lane, H.R.; Brenckle, Paul D.