@misc{indiciae0c0552771e08,
  title = {Drought-sensitive aquifer settings in southeastern Pennsylvania},
  author = {Tammy M. Zimmerman and Dennis W. Risser},
  year = {2005},
  doi = {10.3133/sir20055169},
  url = {https://pubs.usgs.gov/publication/sir20055169},
  note = {Source identifier: sir20055169}
}