@misc{indiciae643863d719d4,
  title = {Reconnaissance geologic map of the Arivaca Quadrangle, Arizona},
  author = {W. J. Keith and T. G. Theodore},
  year = {1975},
  doi = {10.3133/mf678},
  url = {https://pubs.usgs.gov/publication/mf678},
  note = {Source identifier: mf678}
}