TY  - RPRT
TI  - Preliminary determination of epicenters; monthly listing; April-June 1998
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1999
DO  - 10.3133/ofr98600b
UR  - https://pubs.usgs.gov/publication/ofr98600B
ID  - ofr98600B
ER  -