TY - RPRT TI - Potentiometric surface of the Lower Patapsco Aquifer in southern Maryland, September 2003 AU - Stephen E. Curtin AU - David C. Andreasen AU - Judith C. Wheeler PY - 2006 DO - 10.3133/ofr20051010 UR - https://pubs.usgs.gov/publication/ofr20051010 ID - ofr20051010 ER -