@misc{indiciaeb615edda79fd,
  title = {Earthquakes in the United States, January-March 1974},
  author = {Carl W. Stover and R. B. Simon and W. J. Person},
  year = {1976},
  doi = {10.3133/cir723a},
  url = {https://pubs.usgs.gov/publication/cir723A},
  note = {Source identifier: cir723A}
}