@misc{indiciaefecd87e8c7bc,
  title = {Preliminary geologic map and engineering geologic information, Oakland and vicinity, California},
  author = {Dorothy H. Radbruch and J. E. Case},
  year = {1967},
  doi = {10.3133/ofr67183},
  url = {https://pubs.usgs.gov/publication/ofr67183},
  note = {Source identifier: ofr67183}
}