TY - RPRT TI - Altitude and configuration of the potentiometric surface in the crystalline and metasedimentary rocks in Sadsbury, West Caln, and West Sadsbury townships, Chester County, Pennsylvania, April 1993 through August 1994 AU - William C. Wettstein AU - Charles R. Wood PY - 1996 DO - 10.3133/ofr96340 UR - https://pubs.usgs.gov/publication/ofr96340 ID - ofr96340 ER -