TY - RPRT TI - Base-flow characteristics of streams in the Valley and Ridge, Blue Ridge, and Piedmont physiographic provinces of Virginia AU - D.L. Nelms AU - G.E. Harlow AU - Donald C. Hayes PY - 1995 DO - 10.3133/ofr95298 UR - https://pubs.usgs.gov/publication/ofr95298 ID - ofr95298 ER -