@misc{indiciae569e20c553b6,
  title = {Geologic map of the Cochise Head Quadrangle and adjacent areas, southeastern Arizona},
  author = {Harald Drewes},
  year = {1982},
  doi = {10.3133/i1312},
  url = {https://pubs.usgs.gov/publication/i1312},
  note = {Source identifier: i1312}
}