@misc{indiciae283958f8e820,
  title = {Reconnaissance geologic map of the Picacho Mountains, Arizona},
  author = {Warren Yeend},
  year = {1976},
  doi = {10.3133/mf778},
  url = {https://pubs.usgs.gov/publication/mf778},
  note = {Source identifier: mf778}
}