@misc{indiciaedecc12dea2ac,
  title = {Compilation of ground water quality data in Pennsylvania},
  author = {J. L. Barker},
  year = {1984},
  doi = {10.3133/ofr84706},
  url = {https://pubs.usgs.gov/publication/ofr84706},
  note = {Source identifier: ofr84706}
}