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/ofr01206 UR - https://pubs.usgs.gov/publication/ofr01206 ID - ofr01206 ER -