@misc{indiciaea599d554c437,
  title = {Preliminary determination of epicenters; monthly listing July-September 1993},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1993},
  doi = {10.3133/ofr93600c},
  url = {https://pubs.usgs.gov/publication/ofr93600C},
  note = {Source identifier: ofr93600C}
}