TY - RPRT TI - Potentiometric Surface of the Lower Patapsco Aquifer in Southern Maryland, September 2001 AU - Stephen E. Curtin AU - David C. Andreasen AU - Judith C. Wheeler PY - 2002 DO - 10.3133/ofr2002448 UR - https://pubs.usgs.gov/publication/ofr2002448 ID - ofr2002448 ER -