@misc{indiciae5a200a53cf97,
  title = {Geophysical surveys in the Ochoco quicksilver district, Oregon},
  author = {E.L. Stephenson},
  year = {1942},
  doi = {10.3133/ofr422},
  url = {https://pubs.usgs.gov/publication/ofr422},
  note = {Source identifier: ofr422}
}