@misc{indiciae42e866e34575,
  title = {Chemical analyses of stream sediment in the Tar Creek basin of the Picher mining area, northeast Oklahoma},
  author = {David L. Parkhurst and Michael Doughten and Hearn},
  year = {1988},
  doi = {10.3133/ofr88469},
  url = {https://pubs.usgs.gov/publication/ofr88469},
  note = {Source identifier: ofr88469}
}