@misc{indiciae41cef5154b70,
  title = {Preliminary geologic map of the Canoga Park 7.5' Quadrangle, southern California: A digital database},
  author = {R.F. Yerkes and Russell H. Campbell},
  year = {1997},
  doi = {10.3133/ofr9590},
  url = {https://pubs.usgs.gov/publication/ofr9590},
  note = {Source identifier: ofr9590}
}