Factors affecting groundwater quality in the Valley and Ridge aquifers, eastern United States, 1993-2002 [electronic resource] / by Gregory C. Johnson [and others] ; National Water-Quality Assessment Program
- Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2011.
- Physical Description:
- 1 online resource (x, 70 pages) : illustrations (chiefly color), color maps
- Additional Creators:
- Johnson, Gregory C., Geological Survey (U.S.), and National Water-Quality Assessment Program (U.S.)
- Scientific Investigations Report ; 2011-5115
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Title from title screen (viewed on Sept. 12, 2011).
- Bibliography Note:
- Includes bibliographical references (pages 58-64).
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