@misc{indiciae8a4f08485443,
  title = {Aeromagnetic map of the San Francisco Bay area, California},
  author = {R.C. Jachens and C. W. Roberts},
  year = {1993},
  doi = {10.3133/gp1007},
  url = {https://pubs.usgs.gov/publication/gp1007},
  note = {Source identifier: gp1007}
}