@misc{indiciae55ecf2dffe52,
  title = {Puerto Rico seismic network data report of earthquakes located by the programs HYPO71 and HYPOELLIPSE: July 1, 1975 - December 31, 1977},
  author = {R. L. Dart and Arthur C. Tarr and D. L. Carver and Mary Kay Wharton},
  year = {1980},
  doi = {10.3133/cir821},
  url = {https://pubs.usgs.gov/publication/cir821},
  note = {Source identifier: cir821}
}