TY - RPRT TI - Potentiometric surface of the Brightseat-upper Potomac Aquifer in Virginia, 1993 AU - E. C. Hammond AU - E. R. McFarland AU - M. J. Focazio PY - 1994 DO - 10.3133/ofr94370 UR - https://pubs.usgs.gov/publication/ofr94370 ID - ofr94370 ER -