TY - RPRT TI - Potentiometric surface of the lower Patapsco aquifer in southern Maryland, September 2000 AU - Stephen E. Curtin AU - David C. Andreasen AU - Judith C. Wheeler PY - 2002 DO - 10.3133/ofr02247 UR - https://pubs.usgs.gov/publication/ofr02247 ID - ofr02247 ER -