TY - RPRT TI - Altitude and configuration of the potentiometric surface in the Upper Triassic sedimentary rocks at and near the North Penn Area 12 Superfund site, Worcester Township, Montgomery County, Pennsylvania, July 20-27, 1995 AU - Kevin E. Grazul PY - 1996 DO - 10.3133/ofr95747 UR - https://pubs.usgs.gov/publication/ofr95747 ID - ofr95747 ER -