@misc{indiciae9fc40db731b9,
  title = {Altitude and configuration of the potentiometric surface, May and June 1993, and change in water level 1983-93, in the carbonate rocks in part of East Whiteland and Charlestown Townships, Chester County, Pennsylvania},
  author = {B. C. McManus and R. A. Sloto},
  year = {1994},
  doi = {10.3133/ofr93659},
  url = {https://pubs.usgs.gov/publication/ofr93659},
  note = {Source identifier: ofr93659}
}