@misc{indiciaee9b33132792f,
  title = {Geologic map of the San Francisco South quadrangle, California},
  author = {Manuel G. Bonilla},
  year = {1965},
  doi = {10.3133/ofr6518},
  url = {https://pubs.usgs.gov/publication/ofr6518},
  note = {Source identifier: ofr6518}
}