TY - BOOK AU - Rutledge,A.T. AU - Mesko,Thomas O. TI - Estimated hydrologic characteristics of shallow aquifer systems in the Valley and Ridge, the Blue Ridge, and the Piedmont physiographic provinces based on analysis of streamflow recession and base flow PY - 1996/// CY - Washington PB - U.S.Government Printing Office N1 - Includes bibliographical references (p. 34-37) ER -