@misc{indiciae9844cdb7145e, title = {Earthquake data report, May 1991}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1991}, doi = {10.3133/ofr91605b}, url = {https://pubs.usgs.gov/publication/ofr91605B}, note = {Source identifier: ofr91605B} }