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. 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
5. 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
6. 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
7. 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
8. 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
9. 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
10. 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