@misc{indiciae784c9b777be2,
  title = {Preliminary determination of epicenters monthly listing, April-June 1989},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1989},
  doi = {10.3133/ofr89600b},
  url = {https://pubs.usgs.gov/publication/ofr89600B},
  note = {Source identifier: ofr89600B}
}