@misc{indiciae40a40d547a2b,
  title = {Maps showing aeromagnetic anomalies, faults, earthquake epicenters, and igneous and volcanic rocks in the southern San Francisco Bay region, California},
  author = {William F. Hanna and Earl E. Brabb},
  year = {1979},
  doi = {10.3133/ofr79827},
  url = {https://pubs.usgs.gov/publication/ofr79827},
  note = {Source identifier: ofr79827}
}