@misc{indiciaefe1c208d74ca,
  title = {Photogeologic map of the east half of Cahone Quadrangle, Montezuma and Dolores counties, Colorado},
  author = {R.J. Hackman},
  year = {1958},
  doi = {10.3133/tem1071},
  url = {https://pubs.usgs.gov/publication/tem1071},
  note = {Source identifier: tem1071}
}