@misc{indiciae49a7f84a3a5d,
  title = {Geologic map of the Nogales Quadrangle, Santa Cruz County, Arizona},
  author = {F. S. Simons},
  year = {1971},
  doi = {10.3133/ofr71263},
  url = {https://pubs.usgs.gov/publication/ofr71263},
  note = {Source identifier: ofr71263}
}