@misc{indiciae527fa91b0730,
  title = {Preliminary geologic map of the San Francisco South quadrangle and part of the Hunters Point quadrangle, California},
  author = {M. G. Bonilla},
  year = {1971},
  doi = {10.3133/mf311},
  url = {https://pubs.usgs.gov/publication/mf311},
  note = {Source identifier: mf311}
}