Ground-water supplies in shale and sandstone in Fairfax, Loudoun, and Prince William Counties, Virginia. - Johnston, P. M. (Paul McKelvey), 1904-1989. (Washington, [U.S. Geological Survey], 1960)
Errata slip inserted.
Bibliography: p. 6-7.
Keywords: Water-supply -- Virginia; Groundwater -- Virginia; Borings -- Virginia; Water -- Composition; Geology -- Virginia; Geology, Stratigraphic -- Triassic