@misc{indiciae305b1a74c491,
  title = {Geologic map of the Railroad Pass Quadrangle, Cochise County, Arizona},
  author = {R.C. Erickson and Harald Drewes},
  year = {1984},
  doi = {10.3133/mf1688},
  url = {https://pubs.usgs.gov/publication/mf1688},
  note = {Source identifier: mf1688}
}