@misc{indiciae1f0b6d948fa3,
  title = {Agathla Peak SE quadrangle, Arizona},
  author = {I. J. Witkind},
  year = {1957},
  doi = {10.3133/mf90},
  url = {https://pubs.usgs.gov/publication/mf90},
  note = {Source identifier: mf90}
}