@misc{indiciaea032064cb7d6,
  title = {Geologic map of the Black Mountain quadrangle, Pinal County, Arizona},
  author = {Medora Louise Hooper Krieger},
  year = {1974},
  doi = {10.3133/gq1108},
  url = {https://pubs.usgs.gov/publication/gq1108},
  note = {Source identifier: gq1108}
}