@misc{indiciae43ad8578f723,
  title = {Catalog of first motion focal mechanisms, 1986-1987, Volume 2},
  author = {Russell E. Needham},
  year = {1990},
  doi = {10.3133/ofr88556b},
  url = {https://pubs.usgs.gov/publication/ofr88556B},
  note = {Source identifier: ofr88556B}
}