@misc{indiciae966a6fd7efea,
  title = {Preliminary geologic map of the Point Dume 7.5' quadrangle, southern California: A digital database},
  author = {R.F. Yerkes and R. H. Campbell},
  year = {1997},
  doi = {10.3133/ofr97276},
  url = {https://pubs.usgs.gov/publication/ofr97276},
  note = {Source identifier: ofr97276}
}