TY  - BOOK
AU  - Ben-menahem Ari Ben
AU  -  Singh Sarvajit
TI  - Seismic waves and sources
U1  - H4132, M1 
PY  - 1981///
CY  - New York    
PB  -  Springer-verlag        
KW  -  Earthquake
KW  - Geology
ER  -