Water quality in the Appalachian Valley and Ridge, the Blue Ridge, and the Piedmont physiographic provinces, eastern United States /

Briel, L. I.

Water quality in the Appalachian Valley and Ridge, the Blue Ridge, and the Piedmont physiographic provinces, eastern United States / by L.I. Briel. - Washington, DC : U.S. Geological Survey, 1997. - 1 v. (various pagings) : ill. ; 28 cm. - Regional aquifer-system analysis--Appalachian Valley and Piedmont ; D U.S. Geological Survey professional paper ; 1422 .

Includes bibliographical references.

97-007723


Water quality--Appalachian Region.

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