@misc{indiciaea5b7409acc68,
  title = {Geologic map of the Winkelman quadrangle, Pinal and Gila Counties, Arizona},
  author = {Medora H. Krieger},
  year = {1969},
  doi = {10.3133/ofr69145},
  url = {https://pubs.usgs.gov/publication/ofr69145},
  note = {Source identifier: ofr69145}
}