@misc{indiciae4cb9ca9e7475,
  title = {Mineral resource potential maps of the Sill Hill, Hauser, and Caliente Roadless Areas, San Diego County, California},
  author = {V. R. Todd and R. E. Learned and T. J. Peters and R. T. Mayerle},
  year = {1983},
  doi = {10.3133/mf1547a},
  url = {https://pubs.usgs.gov/publication/mf1547A},
  note = {Source identifier: mf1547A}
}