University of Illinois Urbana-Champaign

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Showing 5491–5520 of 22,703 items
Thumbnail for Water quality and agrichemical loading in two groundwater basins of Illinois' sinkhole plain
Water quality and agrichemical loading in two groundwater basins of Illinois' sinkhole plain
Panno, S.V.; Kelly, W.R.; Weibel, C.P.; Krapac, I.G.; Sargent, S.L.

Thumbnail for Gumbotil, accretion-gley, and the weathering profile
Gumbotil, accretion-gley, and the weathering profile
Frye, John Chapman; Willman, Harold Bowen; Glass, Herbert David