TY  - RPRT
TI  - Seismological mapping of fine structure near the base of the Earth's mantle
AU  - J.E. Vidale
AU  - H.M. Benz
PY  - 1993
DO  - 10.1038/361529a0
UR  - https://pubs.usgs.gov/publication/70018380
ID  - 70018380
ER  -