Author
National Water-Quality Assessment Program (U.S.)
2
United States. Environmental Protection Agency. Office of Pesticide Programs
2
United States. Environmental Protection Agency. Prevention, Pesticides, and Toxic Substances
2
Capel, Paul D.
1
Capel, Paul D.,
1
Geological Survey (U.S.)
1
Geological Survey (U.S.),
1
Larson, Steven J.
1
Larson, Steven J.,
1
MacLean, Jayne T.
1
National Agricultural Library (U.S.)
1
Rafats, Jerry
1
Winterstein, Thomas A.
1
Winterstein, Thomas A.,
1