@misc{indiciaeba8b52ec80dd,
  title = {Preliminary geologic map of the Goldfield mining district, Esmeralda and Nye counties, Nevada},
  author = {Roger P. Ashley},
  year = {1971},
  doi = {10.3133/ofr7110},
  url = {https://pubs.usgs.gov/publication/ofr7110},
  note = {Source identifier: ofr7110}
}