@misc{indiciaeaad9bd3a5529,
  title = {Geology and ore deposits of the Picher field, Oklahoma and Kansas},
  author = {Edwin Thor McKnight and Richard Philip Fischer},
  year = {1970},
  doi = {10.3133/pp588},
  url = {https://pubs.usgs.gov/publication/pp588},
  note = {Source identifier: pp588}
}