TY  - RPRT
TI  - Preliminary determination of epicenters; monthly listing, July-September 1991
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1991
DO  - 10.3133/ofr91600c
UR  - https://pubs.usgs.gov/publication/ofr91600C
ID  - ofr91600C
ER  -