@misc{indiciae628261a18c3f,
  title = {Preliminary geologic map of the Van Nuys 7.5' quadrangle, southern California},
  author = {R.F. Yerkes},
  year = {1996},
  doi = {10.3133/ofr9686},
  url = {https://pubs.usgs.gov/publication/ofr9686},
  note = {Source identifier: ofr9686}
}