University of Illinois Urbana-Champaign

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Showing 211–240 of 2,877 items
Thumbnail for Directory of Illinois mineral producers, and maps of extraction sites 1997
Directory of Illinois mineral producers, and maps of extraction sites 1997
Masters, John M.; Ipe, Viju C.; Smith, Lisa R.; Falter, Michael

Thumbnail for Agricultural Chemicals in Rural, Private Water Wells in Illinois: Recommendations for a Statewide Survey
Agricultural Chemicals in Rural, Private Water Wells in Illinois: Recommendations for a Statewide Survey
McKenna, Dennis P.; Schock, S.C.; Mehnert, E.; Mravik, S.C.; Keefer, D.A.