@misc{indiciae71778c30100a,
  title = {Seismicity map of the conterminous United States and adjacent areas, 1965-1974},
  author = {C. W. Stover},
  year = {1977},
  doi = {10.3133/mf812},
  url = {https://pubs.usgs.gov/publication/mf812},
  note = {Source identifier: mf812}
}