@misc{indiciaea2d339f81694,
  title = {Isostatic residual gravity map of the San Francisco Bay area, California},
  author = {C. W. Roberts and R.C. Jachens},
  year = {1993},
  doi = {10.3133/gp1006},
  url = {https://pubs.usgs.gov/publication/gp1006},
  note = {Source identifier: gp1006}
}