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Environmental factors that influence the location of crop agriculture in the conterminous United Sta

Baker, Nancy Tucker, 1957-
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2011. 2011

Pesticides in surface waters : distribution, trends, and governing factors

Larson, Steven J.
Chelsea, Mich. : Ann Arbor Press, [1997]. 1997

Studies by the U.S. Geological Survey on sources, transport, and fate of agricultural chemicals

Capel, Paul D.
[Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, [2004] 2004