@misc{indiciaed0ef45fdc0b1,
  title = {Preliminary geologic map of the Sunland 7.5' quadrangle, southern California: A digital database},
  author = {R.F. Yerkes},
  year = {1997},
  doi = {10.3133/ofr97270},
  url = {https://pubs.usgs.gov/publication/ofr97270},
  note = {Source identifier: ofr97270}
}