@misc{indiciae72f6318d6a89,
  title = {Placer mining in the Tolovana district},
  author = {R. M. Overbeck},
  year = {1920},
  doi = {10.3133/b712f},
  url = {https://pubs.usgs.gov/publication/b712F},
  note = {Source identifier: b712F}
}