@misc{indiciae68f01d3c7ac6,
  title = {Seismicity map of greater San Francisco Bay area, California (1969-1971)},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1972},
  doi = {10.3133/ofr72419},
  url = {https://pubs.usgs.gov/publication/ofr72419},
  note = {Source identifier: ofr72419}
}