@misc{indiciae810ed3905499,
  title = {Geologic map of the southern part of the Mule Mountains, Cochise County, Arizona},
  author = {P. T. Hayes and E.R. Landis},
  year = {1964},
  doi = {10.3133/i418},
  url = {https://pubs.usgs.gov/publication/i418},
  note = {Source identifier: i418}
}