@misc{indiciae8ec5d1414a65,
  title = {Mineral resources of the Southern Otay Mountain and Western Otay Mountain Wilderness Study Areas, San Diego County, California},
  author = {Victoria R. Todd and G. K. Lee and H. W. Oliver and J. D. Causey and S. W. Schmauch},
  year = {1988},
  doi = {10.3133/b1711e},
  url = {https://pubs.usgs.gov/publication/b1711E},
  note = {Source identifier: b1711E}
}