@misc{indiciae446a65a9b56d,
  title = {Shaded-relief map of the San Francisco Bay region, California},
  author = {Scott E. Graham and Richard J. Pike},
  year = {1997},
  doi = {10.3133/ofr97745b},
  url = {https://pubs.usgs.gov/publication/ofr97745B},
  note = {Source identifier: ofr97745B}
}