@misc{indiciae71a0383860ff,
  title = {Mineral resources of the Big Horn Mountains Wilderness Study Area, Maricopa County, Arizona},
  author = {Floyd Gray and R. J. Miller and J.R. Hassemer and W. F. Hanna and J.C. Brice and R.A. Schreiner},
  year = {1987},
  doi = {10.3133/b1701a},
  url = {https://pubs.usgs.gov/publication/b1701A},
  note = {Source identifier: b1701A}
}