@misc{indiciaee4103d1e45f1,
  title = {Preliminary determination of epicenters; monthly listing; October-December 1999},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1999},
  doi = {10.3133/ofr99600d},
  url = {https://pubs.usgs.gov/publication/ofr99600D},
  note = {Source identifier: ofr99600D}
}