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Author/Creator
- Geological Survey (U.S.)8
- Goldsmith, Gala D. S.2
- Mack, Frederick K.2
- Maryland Geological Survey2
- Maryland. Tidewater Administration2
- Mississippi. Office of Land and Water Resources2
- United States. Congress. House. Committee on Energy and Commerce. Subcommittee on Oversight and Investigations2
- American Chemical Society. Division of Agrochemicals1
- American Chemical Society. Meeting 19901
- Coats, Joel R.1
- EPA Ground-Water Task Force (U.S.)1
- Pabst, B. J. (Barbara J.)1
- Porcello, J. J. (John Joseph)1
- Siwiec, Steven F.1
- Somasundaram, L., 1961-1
- Swain, Lindsay A.1
- Thomsen, B. W., 1926-1
- United States. Bureau of Indian Affairs1
- United States. Environmental Protection Agency1
- United States. Environmental Protection Agency. Office of Water1