@misc{indiciaeb66fca7c162f,
  title = {Tonopah mining district},
  author = {J. E. Spurr},
  year = {1905},
  doi = {10.1016/s0016-0032(05)90241-x},
  url = {https://pubs.usgs.gov/publication/70009933},
  note = {Source identifier: 70009933}
}