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Ambient water quality criteria recommendations information supporting the development of state and t

Washington, D.C. : U.S. Environmental Protection Agency, Office of Water, Office of Science and Technology, Health and Ecological Criteria Division, [2000] 2000

Ambient water quality criteria recommendations information supporting the development of state and t

Washington, DC : U.S. Environmental Protection Agency, Office of Water, Office of Science and Technology, Health and Ecological Criteria Division, [2001] 2001

A Reconnaissance for selected herbicides, metabolites, and nutrients in streams of nine Midwestern S

Lawrence, Kan. : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : Information Services [distributor], 1998. 1998