@misc{indiciaedaf9c37cc803,
  title = {Geologic map of the Superior quadrangle, Pinal County, Arizona},
  author = {Donald W. Peterson},
  year = {1969},
  doi = {10.3133/gq818},
  url = {https://pubs.usgs.gov/publication/gq818},
  note = {Source identifier: gq818}
}