Factors affecting groundwater quality in the Valley and Ridge aquifers, eastern United States, 1993-2002
By: by Gregory C. Johnson ... [et al.] ; National Water-Quality Assessment Program
Contributors: Geological Survey (U.S.); National Water-Quality Assessment Program (U.S.)
Series: Scientific investigations report -- 2011-5115; Scientific investigations report -- 2011-5115.
Publisher: U.S. Dept. of the Interior, U.S. Geological Survey
Published: 2011
Place of publication: Reston, Va
Language: eng
Format: [electronic resource] /
Number of pages: 70
Subjects: Groundwater; Quality; Aquifers
Notes: Title from title screen (viewed on Sept. 12, 2011).

Includes bibliographical references (p. 58-64).