@misc{indiciaefbbb6c604d31,
  title = {Preliminary geologic map of Chiricahua National Monument, Cochise County, Arizona, with digital geologic map data},
  author = {E. A. Du Bray and John S. Pallister},
  year = {1993},
  doi = {10.3133/ofr93590a},
  url = {https://pubs.usgs.gov/publication/ofr93590A},
  note = {Source identifier: ofr93590A}
}