TY - RPRT TI - Simulation of ground-water flow in the Potomac-Raritan-Magothy aquifer system near the Defense Supply Center Philadelphia, and the Point Breeze Refinery, southern Philadelphia County, Pennsylvania AU - Curtis L. Schreffler PY - 2001 DO - 10.3133/wri014218 UR - https://pubs.usgs.gov/publication/wri014218 ID - wri014218 ER -