University of Illinois Urbana-Champaign

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Showing 9691–9720 of 16,240 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 Upper Sangamon River area assessment
Upper Sangamon River area assessment
Submitter: Steven Mccauley

Thumbnail for Sex Ratios and Age Ratios in North American Ducks
Sex Ratios and Age Ratios in North American Ducks
Bellrose, Frank Chapman; Scott, Thomas G.; Hawkins, Arthur Stuart; Low, Jessop B.