@misc{indiciaebe9e7e1dc779,
  title = {Preliminary geologic map of the western part of the Superior quadrangle, Pinal County, Arizona},
  author = {Donald W. Peterson},
  year = {1962},
  doi = {10.3133/mf253},
  url = {https://pubs.usgs.gov/publication/mf253},
  note = {Source identifier: mf253}
}