1. Percentage change in saturated thickness of the High Plains aquifer, west-central Kansas, 1950 to average 1988-90 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Lawrence, Kansas : U.S. Department of the Interior, U.S. Geological Survey, 1991 Format: Map Access & Availability: Loading
2. Pesticide transformation products : fate and significance in the environment Publication/Creation: Washington, DC : American Chemical Society, 1991 Format: Book Access & Availability: Loading
3. Pesticides in groundwater : hearing before the Subcommittee on Oversight and Investigations of the Committee on Energy and Commerce, House of Representatives, One Hundred Second Congress, first session, May 8, 1991 Author/Creator: United States. Congress. House. Committee on Energy and Commerce. Subcommittee on Oversight and Investigations, author Publication/Creation: [Buffalo, New York] : William S. Hein & Co., [2012] Format: Book Access & Availability: Loading
4. Pesticides in soils and ground water in selected irrigated agricultural areas near Havre, Ronan, and Huntley, Montana Author/Creator: Clark, David W. 1951- (David Wayne), author Publication/Creation: Helena, Montana : U.S. Geological Survey, 1990 Format: Book Access & Availability: Loading
5. Plan of study for the regional aquifer-system analysis of the Appalachian Valley and Ridge, Piedmont, and Blue Ridge physiographic provinces of the eastern and southeastern United States, with a description of study-area geology and hydrogeology Author/Creator: Swain, Lindsay A., author Publication/Creation: Richmond, Virginia : U.S. Geological Survey, 1991 Format: Book Access & Availability: Loading
6. Plan to evaluate the effects of hydrogeologic conditions and human activities on water quality in the coastal plain of New York and New Jersey Author/Creator: Vowinkel, Eric F., author Publication/Creation: West Trenton, New Jersey : U.S. Geological Survey, 1991 Format: Book Access & Availability: Loading
7. Potential for ground-water development in central Volusia County, Florida Author/Creator: Kimrey, Joel O. 1931- (Joel Otto), author Publication/Creation: Tallahassee, Florida : U.S. Geological Survey, 1990 Format: Book Access & Availability: Loading
8. Potentiometric surface of the alluvial aquifer and hydrologic conditions in the Santa Isabel-Juana Diaz area, Puerto Rico, March to April, 1987 Author/Creator: Geological Survey (U.S.). Water Resources Division. Caribbean District, cartographer Publication/Creation: San Juan, P.R. : Department of the Interior, U.S. Geological Survey, Water Resources Division, Caribbean District, 1990 Format: Map Access & Availability: Loading
9. Potentiometric surface of the alluvial aquifer and hydrologic conditions near Gurabo and Juncos, Puerto Rico, March 1988 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: San Juan, Puerto Rico : U.S. Department of the Interior, U.S. Geological Survey, 1990 Format: Map Access & Availability: Loading
10. Potentiometric surface of the Aquia aquifer in southern Maryland during September 1988 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Towson, Maryland : Department of the Interior, U.S. Geological Survey, 1990 Format: Map Access & Availability: Loading
11. Potentiometric surface of the Aquia aquifer in southern Maryland, September 1989 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Towson, Maryland : Department of the Interior, U.S. Geological Survey, 1991 Format: Map Access & Availability: Loading
12. Potentiometric surface of the Kings Hill aquifer and hydrologic conditions in Saint Croix, U.S. Virgin Islands, July 1987 Author/Creator: Geological Survey (U.S.). Water Resources Division. Caribbean District, cartographer Publication/Creation: San Juan, Puerto Rico : U.S. Geological Survey, Water Resources Division, Caribbean District, 1990 Format: Map Access & Availability: Loading
13. Potentiometric surface of the Magothy aquifer in southern Maryland during September 1988 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Towson, Maryland : Department of the Interior, U.S. Geological Survey, 1990 Format: Map Access & Availability: Loading
14. Potentiometric surface of the Magothy aquifer in southern Maryland, September 1989 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Towson, Maryland : Department of the Interior, U.S. Geological Survey, 1991 Format: Map Access & Availability: Loading
15. Potentiometric surface of the principal aquifer and hydrologic conditions in the Ponce-Juana Diaz area, Puerto Rico, April-May, 1987 Author/Creator: Geological Survey (U.S.). Water Resources Division. Caribbean District, cartographer Publication/Creation: San Juan, Puerto Rico : U.S. Department of the Interior, U.S. Geological Survey, 1990 Format: Map Access & Availability: Loading
16. Potentiometric-surface map of the Coffee Sand aquifer in northeastern Mississippi, August through December 1987 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Jackson, Mississippi : U.S. Department of the Interior, U.S. Geological Survey, 1991 Format: Map Access & Availability: Loading
17. Potentiometric-surface map of the Eutaw-McShan aquifer in northeastern Mississippi, August through December 1987 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Jackson, Mississippi : U.S. Department of the Interior, U.S. Geological Survey, 1991 Format: Map Access & Availability: Loading
18. Potentiometric-surface map of the Gordo aquifer in northeastern Mississippi, August through December 1987 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Jackson, Mississippi : Department of the Interior, United States Geological Survey, 1990 Format: Map Access & Availability: Loading
19. Predevelopment hydrology of the Salt River Indian Reservation, East Salt River Valley, Arizona Author/Creator: Thomsen, B. W., 1926- author Publication/Creation: Tucson, Arizona : U.S. Geological Survey, 1991 Format: Book Access & Availability: Loading
20. A preliminary assessment of the potential for artificial recharge in eastern Arkansas Author/Creator: Fitzpatrick, D. J. (Daniel J.), author Publication/Creation: Little Rock, Arkansas : U.S. Department of the Interior, U.S. Geological Survey, 1990 Format: Book Access & Availability: Loading
21. Protecting local ground-water supplies through wellhead protection Publication/Creation: [Washington, D.C.] : U.S. Environmental Protection Agency, Office of Water, [1991] Format: Book Access & Availability: Loading
22. Protecting the nation's groundwater : EPA's strategy for the 1990s : the final report of the EPA Ground-Water Task Force Author/Creator: EPA Ground-Water Task Force (U.S.), author Publication/Creation: Washington, D.C. : United States Environmental Protection Agency, Office of the Administrator, [1991] Format: Book Access & Availability: Loading