@misc{indiciae8eb632965951, title = {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}, author = {William C. Wettstein and Charles R. Wood}, year = {1996}, doi = {10.3133/ofr96340}, url = {https://pubs.usgs.gov/publication/ofr96340}, note = {Source identifier: ofr96340} }