@misc{indiciae0bf6c55af89b,
  title = {Geologic map of the Valentine southeast quadrangle, Mohave County, Arizona},
  author = {L. Sue Beard and Ivo Lucchitta},
  year = {1993},
  doi = {10.3133/gq1711},
  url = {https://pubs.usgs.gov/publication/gq1711},
  note = {Source identifier: gq1711}
}