@misc{indiciaea9f4e4f86c37,
  title = {Geologic map of California},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1966},
  doi = {10.3133/i512},
  url = {https://pubs.usgs.gov/publication/i512},
  note = {Source identifier: i512}
}