1. A national survey of methyl tert-butyl ether and other volatile organic compounds in drinking-water sources : results of the randon [i.e. random] survey Author/Creator: Grady, Stephen J. Publication/Creation: East Hartford, CT : U.S. Dept. of the Interior, U.S. Geological Survey, 2003 Format: Book Access & Availability: Loading
2. Numerical simulation of advective-dispersive multisolute transport with sorption, ion exchange, and equilibrium chemistry Author/Creator: Lewis, Frank M., author Publication/Creation: Reston, Virginia : U.S. Geological Survey, 1986 Format: Book Access & Availability: Loading
3. Nutrients in ground water and surface water of the United States--an analysis of data through 1992 Author/Creator: Mueller, David K., author Publication/Creation: Denver, Colorado : U.S. Geological Survey, 1995 Format: Book Access & Availability: Loading
4. Nutrients in shallow ground waters beneath relatively undeveloped areas in the conterminous United States Author/Creator: Nolan, Bernard T., 1954- Publication/Creation: Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey, 2003 Format: Book Access & Availability: Loading