@misc{indiciae85ed1c36f0c2, title = {Earthquake data report, February 1991}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1991}, doi = {10.3133/ofr91602a}, url = {https://pubs.usgs.gov/publication/ofr91602A}, note = {Source identifier: ofr91602A} }