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Herbicides in midwestern reservoir outflows, 1992-93

Stamer, J. K.
[Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, [1998] 1998

Occurrence and transport of agricultural chemicals in the Mississippi River basin, July through Augu

Goolsby, D. A.
[Washington] : U.S. G.P.O. ; Denver, CO : Free on application to the U.S. Geological Survey, Map Distribution, 1993. 1993

A reconnaissance for sulfonylurea herbicides in waters of the midwestern USA an example of collabora

Battaglin, William A.
[Reston, Va. : U.S. Geological Survey, 1998] 1998

Wastewater chemicals in Colorado's streams and ground water?h[electronic resource]

Sprague, Lori A.
Lakewood, CO : U.S. Geological Survey, [2005] 2005

Work plan for determining the occurrence of glyphosate, its transformation product AMPA, other herbi

Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey : Information Services [distributor], 2003. 2003