@misc{indiciaea14ad9de0dd5,
  title = {Preliminary geologic map of Humboldt County, Nevada},
  author = {Ronald Willden},
  year = {1961},
  doi = {10.3133/mf236},
  url = {https://pubs.usgs.gov/publication/mf236},
  note = {Source identifier: mf236}
}