1. Regional Aquifer-System Analysis Program of the U.S. Geological Survey--bibliography, 1978-86 Author/Creator: Weeks, John B., author Publication/Creation: Denver, Colorado : U.S. Geological Survey, 1987 Resource Type: Book Access & Availability: Loading
2. Results of external quality-assurance program for the National Atmospheric Deposition Program and National Trends Network during 1985 Author/Creator: Brooks, Myron H., author Publication/Creation: Denver, Colorado : U.S. Geological Survey, 1988 Resource Type: Book Access & Availability: Loading
3. Results of the U.S. Geological Survey's second international interlaboratory analytical comparison study : standard reference water samples M-86 (major constituents), T-87 (trace constituents), and P-5 (precipitation snowmelt) Author/Creator: Janzer, Victor J., author Publication/Creation: Denver, Colorado : U.S. Geological Survey, 1985 Resource Type: Book Access & Availability: Loading
4. A retrospective analysis on the occurrence of arsenic in ground-water resources of the United States and limitations in drinking-water-supply characterizations Author/Creator: Focazio, Michael J., author Publication/Creation: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2000 Resource Type: Book Access & Availability: Loading
5. Review of phosphorus control measures in the United States and their effects on water quality Author/Creator: Litke, David W., author Publication/Creation: Denver, Colorado : U.S. Department of the Interior, U.S. Geological Survey, 1999 Resource Type: Book Access & Availability: Loading
6. Revised methods for characterizing stream habitat in the National Water-Quality Assessment Program Author/Creator: Fitzpatrick, Faith A., author Publication/Creation: Raleigh, North Carolina : U.S. Geological Survey, 1998 Resource Type: Book Access & Availability: Loading