@misc{indiciaefa5b7b7534e9,
  title = {Geologic map of the Valentine SE quadrangle, Mohave County, Arizona},
  author = {L. Sue Beard and Ivo Lucchitta},
  year = {1990},
  doi = {10.3133/ofr90201},
  url = {https://pubs.usgs.gov/publication/ofr90201},
  note = {Source identifier: ofr90201}
}