TY - RPRT TI - Potentiometric surface of the Magothy aquifer in southern Maryland, September 1999 AU - Stephen E. Curtin AU - David C. Andreasen AU - Judith C. Wheeler PY - 2001 DO - 10.3133/ofr01207 UR - https://pubs.usgs.gov/publication/ofr01207 ID - ofr01207 ER -