University of Illinois Urbana-Champaign

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Showing 6691–6720 of 10,813 items
Thumbnail for A survey of the ground-water resources of Illinois
A survey of the ground-water resources of Illinois
Gerber, W.D.; McClure, S.M.; Tarvin, D.; Buswell, Arthur M.

Thumbnail for Effect of agriculture on Cedar Lake water quality
Effect of agriculture on Cedar Lake water quality
Roseboom, Donald P.; Evans, Ralph L.; Hill, Thomas E.