@misc{indiciae9be2cf51eb5c,
  title = {Preliminary geologic map of the Las Vegas 1° x 2° quadrangle, Nevada, Arizona, and California},
  author = {Robert G. Bohannon},
  year = {1978},
  doi = {10.3133/ofr78670},
  url = {https://pubs.usgs.gov/publication/ofr78670},
  note = {Source identifier: ofr78670}
}