Title
Pesticides in the lower Clackamas River basin, Oregon, 2000-01 / by Kurt D. Carpenter ; prepared in cooperation with the Clackamas River Water Providers and Clackamas County Department of Water Environment Services.
Published
Portland, Or. : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : U.S. Geological Survey, Information Services [distributor], 2004.