Base-flow characteristics of streams in the Valley and Ridge, the Blue Ridge, and the Piedmont physiographic provinces of Virginia / D. L. Nelms, G. E. Harlow, D. C. Hayes ; Geological Survey (U.S.)
Material type: TextLanguage: English Series: USGS Water Supply Paper ; 2457Washington, DC : U.S. G.P.O., 1997Description: 48 p. : separate maps in backISBN:- 0607868414
- 9780607868418
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