@misc{indiciae8fe0a68bf044,
  title = {Bouguer gravity map of the southern San Francisco Bay region, California},
  author = {Stephen L. Robbins and C. W. Roberts and Rodger H. Chapman},
  year = {1978},
  doi = {10.3133/ofr78733},
  url = {https://pubs.usgs.gov/publication/ofr78733},
  note = {Source identifier: ofr78733}
}