@misc{indiciaefa903865e22d,
  title = {Geology of the Searchlight district, Clark County, Nevada},
  author = {Eugene Callaghan},
  year = {1939},
  doi = {10.3133/b906d},
  url = {https://pubs.usgs.gov/publication/b906D},
  note = {Source identifier: b906D}
}