http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Map showing global distribution of moment-tensor focal mechanisms, 1981-1985
1 map : color ; 56 x 99 cm., on sheet 69 x 105 cm., folded in envelope 31 x 24 cm.
prepared by National Earthquake Information Center, World Data Center A for Seismology ; compiled by Susan K. Goter.
Geophysical investigations (Geological Survey (U.S.)) ; map GP-991