1. Observed and simulated distribution of selected herbicides in silty loam, sandy loam, and clay soil profiles near Topeka, Kansas, 1986-88 Author/Creator: Perry, Charles A., author Publication/Creation: Lawrence, Kansas : U.S. Geological Survey, 1991 Resource Type: Book Access & Availability: Loading
2. Occurrence and availability of ground water in the Athens region, northeastern Georgia Author/Creator: Radtke, Dean B., author Publication/Creation: Doraville, Georgia : U.S. Geological Survey, 1986 Resource Type: Book Access & Availability: Loading
3. Occurrence and distribution of enteric viruses in shallow ground water and factors affecting well vulnerability to microbiological contamination in Worcester and Wicomico Counties, Maryland Author/Creator: Banks, William S. L., author Publication/Creation: Baltimore, Maryland : U.S. Department of the Interior, U.S. Geological Survey, 2001 Resource Type: Book Access & Availability: Loading
4. Occurrence and distribution of microbiological contamination and enteric viruses in shallow ground water in Baltimore and Harford counties, Maryland Author/Creator: Banks, William S. L. Publication/Creation: Baltimore, Md. : U.S. Dept. of the Interior, U.S. Geological Survey, 2002 Resource Type: Book Access & Availability: Loading
5. Occurrence and distribution of microbiological contamination and enteric viruses in shallow ground water in Baltimore and Harford counties, Maryland Author/Creator: Banks, William S. L. Publication/Creation: Denver, CO : U.S. Geological Survey, Branch of Information Services [distributor] Resource Type: Book Access & Availability: Loading
6. Occurrence and distribution of nitrate and herbicides in the Iowa River alluvial aquifer, Iowa--May 1984 to November 1985 Author/Creator: Detroy, Mark G., author Publication/Creation: Iowa City, Iowa : U.S. Geological Survey, 1988 Resource Type: Book Access & Availability: Loading
7. Occurrence and implications of methyl tert-butyl ether and gasoline hydrocarbons in ground water and source water in the United States and in drinking water in 12 northeast and mid-atlantic states, 1993-2002 Author/Creator: Moran, Michael J. 1962- (Michael James) Publication/Creation: Rapid City, S.D. : U.S. Dept. of the Interior, U.S. Geological Survey, 2004 Resource Type: Book Access & Availability: Loading
8. Occurrence and quality of surface water and ground water within the Yavapai-Prescott Indian Reservation, central Arizona, 1994-98 Publication/Creation: Denver, Colo. : U.S. Geological Survey, Branch of Information Services [distributor]. Resource Type: Book Access & Availability: Loading
9. Occurrence and status of volatile organic compounds in ground water from rural, untreated, self-supplied domestic wells in the United States, 1986-99 Publication/Creation: Rapid City, SD : U.S. Dept. of the Interior, U.S. Geological Survey, 2002 Resource Type: Book Access & Availability: Loading
10. Occurrence of arsenic in ground water of Suffolk County, New York, 1997-2002 Author/Creator: Cartwright, Richard A. Publication/Creation: Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2004 Resource Type: Book Access & Availability: Loading
11. Occurrence of beds of low hydraulic conductivity in surficial deposits of Florida Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Denver Colorado : Open-File Services Section, Western Distribution Branch, U.S. Geological Survey Resource Type: Map Access & Availability: Loading
12. Occurrence of dissolved sodium in ground waters in basalts underlying the Columbia Plateau, Washington Author/Creator: Bortleson, Gilbert Carl, 1940- author Publication/Creation: Tacoma, Washington : U.S. Geological Survey, 1986 Resource Type: Book Access & Availability: Loading
13. Occurrence of natural radium-226 radioactivity in ground water of Sarasota County, Florida Author/Creator: Miller, Ronald L. (Ronald Lewis), author Publication/Creation: Tallahassee, Florida : U.S. Geological Survey, 1985 Resource Type: Book Access & Availability: Loading
14. Occurrence of nitrate and pesticides in ground water beneath three agricultural land-use settings in the eastern San Joaquin Valley, California, 1993-1995 Author/Creator: Burow, Karen R., author Publication/Creation: Sacramento, California : U.S. Geological Survey, 1998 Resource Type: Book Access & Availability: Loading
15. Occurrence of nitrate, pesticides, and volatile organic compounds in the Kirkwood-Cohansey Aquifer system, southern New Jersey Author/Creator: Stackelberg, Paul E., author Publication/Creation: West Trenton, New Jersey : U.S. Department of the Interior, U.S. Geological Survey, 1997 Resource Type: Book Access & Availability: Loading
16. Occurrence of pesticides in streams and ground water in the Puget Sound Basin, Washington, and British Columbia, 1996-98 Author/Creator: Bortleson, Gilbert Carl, 1940- author Publication/Creation: Tacoma, Washington : U.S. Department of the Interior, U.S. Geological Survey, 2000 Resource Type: Book Access & Availability: Loading
17. Occurrence of selected radionuclides in ground water used for drinking water in the United States : a reconnaissance survey, 1998 Author/Creator: Focazio, Michael J., author Publication/Creation: Reston, Virginia : U.S. Geological Survey, 2001 Resource Type: Book Access & Availability: Loading
18. Organic compounds in ground water near a sanitary landfill in the town of Brookhaven, Long Island, New York Author/Creator: Pearsall, Kenneth A., author Publication/Creation: Syosset, New York : U.S. Geological Survey, 1986 Resource Type: Book Access & Availability: Loading
19. Overview of susceptibility of aquifers to contamination, Union County, Arkansas Author/Creator: Leidy, Valarie A., author Publication/Creation: Little Rock, Arkansas : U.S. Geological Survey, 1992 Resource Type: Book Access & Availability: Loading