@misc{indiciaeedfbe9cfbfe2,
  title = {Preliminary geologic map of the Fillmore 7.5' quadrangle, Southern California: A digital database},
  author = {R.F. Yerkes and R. H. Campbell},
  year = {1997},
  doi = {10.3133/ofr95802},
  url = {https://pubs.usgs.gov/publication/ofr95802},
  note = {Source identifier: ofr95802}
}