@misc{indiciae0e020d7a830e,
  title = {Preliminary determination of epicenters monthly listing October-December 1997},
  author = {National Earthquake Information Center},
  year = {1999},
  doi = {10.3133/ofr97600d},
  url = {https://pubs.usgs.gov/publication/ofr97600D},
  note = {Source identifier: ofr97600D}
}