@misc{indiciae2dfa0bc46590,
  title = {Analytical results for 186 water samples collected in Berks, Bucks, Chester, Lancaster, and Montgomery counties, Pennsylvania},
  author = {W. H. Ficklin and J. B. McHugh and J.M. McNeal},
  year = {1985},
  doi = {10.3133/ofr85667},
  url = {https://pubs.usgs.gov/publication/ofr85667},
  note = {Source identifier: ofr85667}
}