@misc{indiciaec40073fa02f4,
  title = {Catalog of first motion focal mechanisms 1984-1985 : Volume 2},
  author = {R.E. Needham},
  year = {1988},
  doi = {10.3133/ofr86520b},
  url = {https://pubs.usgs.gov/publication/ofr86520B},
  note = {Source identifier: ofr86520B}
}