TY - RPRT TI - Investigations of groundwater system and simulation of regional groundwater flow for North Penn Area 7 Superfund site, Montgomery County, Pennsylvania AU - Lisa A. Senior AU - Daniel J. Goode PY - 2013 DO - 10.3133/sir20135045 UR - https://pubs.usgs.gov/publication/sir20135045 ID - sir20135045 ER -