@misc{indiciae6768bdedefc1,
  title = {Geohydrology of Southeastern Pennsylvania},
  author = {Dennis J. Low and Daniel J. Hippe and Dawna Yannacci},
  year = {2002},
  doi = {10.3133/wri004166},
  url = {https://pubs.usgs.gov/publication/wri004166},
  note = {Source identifier: wri004166}
}