@misc{indiciae428d93a777d2,
  title = {Earthquakes in the United States, October-December 1981},
  author = {Carl W. Stover and J. H. Minsch and B. Glen Reagor},
  year = {1982},
  doi = {10.3133/cir871d},
  url = {https://pubs.usgs.gov/publication/cir871D},
  note = {Source identifier: cir871D}
}