@misc{indiciae216fde2a52a7, title = {Preliminary determination of epicenters, monthly listing: April - June, 1986}, author = {National Earthquake Information Center}, year = {1988}, doi = {10.3133/ofr86600b}, url = {https://pubs.usgs.gov/publication/ofr86600B}, note = {Source identifier: ofr86600B} }