@misc{indiciae699b1cab964a,
  title = {Preliminary geologic map of the west half, Los Angeles 60' x 30' quadrangle},
  author = {R.F. Yerkes and R. H. Campbell},
  year = {1997},
  doi = {10.3133/ofr97483},
  url = {https://pubs.usgs.gov/publication/ofr97483},
  note = {Source identifier: ofr97483}
}