@misc{indiciae294fb8bbbd93,
  title = {Altitude and configuration of the potentiometric surface in East Nottingham and West Nottingham Townships, Chester County, Pennsylvania, April through June 2004},
  author = {Lindsay B. Hale},
  year = {2006},
  doi = {10.3133/sim2911},
  url = {https://pubs.usgs.gov/publication/sim2911},
  note = {Source identifier: sim2911}
}