@misc{indiciaee1bfdff5c9cd,
  title = {Chemical analyses of water samples from the Picher mining area, northeast Oklahoma and southeast Kansas},
  author = {David L. Parkhurst},
  year = {1987},
  doi = {10.3133/ofr87453},
  url = {https://pubs.usgs.gov/publication/ofr87453},
  note = {Source identifier: ofr87453}
}