1. Precision and bias of selected analytes reported by the National Atmospheric Deposition Program and National Trends Network : 1983 and January 1980 through September 1984 Author/Creator: Schroder, L. J., author Publication/Creation: Lakewood, Colorado : U.S. Geological Survey, 1985 Resource Type: Book Access & Availability: Loading
2. External quality-assurance results for the National Atmospheric Deposition Program and the National Trends Network during 1987 Author/Creator: See, Randolph B., author Publication/Creation: Denver, Colorado : U.S. Geological Survey, 1989 Resource Type: Book Access & Availability: Loading
3. Stability of nitrate-ion concentrations in simulated deposition samples used for quality-assurance activities by the U.S. Geological Survey Author/Creator: Willoughby, Timothy C., author Publication/Creation: Denver, Colorado : U.S. Geological Survey, 1989 Resource Type: Book Access & Availability: Loading
4. External quality-assurance results for the National Atmospheric Deposition Program/National Trends Network during 1988 Author/Creator: See, Randolph B., author Publication/Creation: Denver, Colorado : U.S. Geological Survey, 1990 Resource Type: Book Access & Availability: Loading
5. Programs and analytical methods for the U.S. Geological Survey acid rain quality-assurance project Author/Creator: See, Randolph B., author Publication/Creation: Denver, Colorado : U.S. Geological Survey, 1990 Resource Type: Book Access & Availability: Loading
6. Summary of the National Atmospheric Deposition Program/National Trends Network intersite-comparison program, November 1978-November 1989 Author/Creator: Gordon, J. D., author Publication/Creation: Denver, Colorado : U.S. Geological Survey, 1991 Resource Type: Book Access & Availability: Loading
7. Variability in wet atmospheric deposition data determined with collocated samplers Author/Creator: Nilles, Mark A., author Publication/Creation: Denver, Colorado : U.S. Geological Survey, 1992 Resource Type: Book Access & Availability: Loading
8. External quality-assurance results for the National Atmospheric Deposition Program/National Trends Network during 1991 Author/Creator: Nilles, Mark A., author Publication/Creation: Denver, Colorado : U.S. Geological Survey, 1995 Resource Type: Book Access & Availability: Loading
9. External quality-assurance results for the National Atmospheric Deposition Program/National Trends Network during 1994 Author/Creator: Gordon, J. D., author Publication/Creation: Denver, Colorado : U.S. Geological Survey, 1997 Resource Type: Book Access & Availability: Loading
10. External quality-assurance results for the National Atmospheric Deposition Program/National Trends Network, 1995-96 Author/Creator: Gordon, J. D. Publication/Creation: Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey, 1999 Resource Type: Book Access & Availability: Loading