@misc{indiciae157295ce0864, title = {Preliminary determination of epicenters monthly listing, October-December 1990}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1990}, doi = {10.3133/ofr90600d}, url = {https://pubs.usgs.gov/publication/ofr90600D}, note = {Source identifier: ofr90600D} }