@misc{indiciae0ac5947a9700,
  title = {Geology of the Bechtol lead mine, Stevens County, Washington},
  author = {Charles Duncan Campbell},
  year = {1949},
  doi = {10.3133/ofr4925},
  url = {https://pubs.usgs.gov/publication/ofr4925},
  note = {Source identifier: ofr4925}
}