@misc{indiciae48a130bea6ce,
  title = {Geologic map of the Topopah Spring quadrangle, Nye County, Nevada},
  author = {Paul P. Orkild and J. T. O’Connor},
  year = {1970},
  doi = {10.3133/gq849},
  url = {https://pubs.usgs.gov/publication/gq849},
  note = {Source identifier: gq849}
}