@misc{indiciaee5a79eadffa8,
  title = {Geologic map of the San Joaquin Hills-San Juan Capistrano area, Orange County, California},
  author = {J. G. Vedder and R. F. Yerkes and J. E. Schoellhamer},
  year = {1957},
  doi = {10.3133/om193},
  url = {https://pubs.usgs.gov/publication/om193},
  note = {Source identifier: om193}
}