TY  - BOOK
AU  - RICHTER,CHORLES F
TI  - ELEMENTARY SEISMOLOGY / 
U1  - 551.22 
PY  - 1969///
CY  - [S.N] : 
PB  - EURASIA PUBLISHING HOUSE(PVT.) LTD ، 
KW  - EARTHQUAKES
KW  - ELEMENTARY
KW  - SEISMOLOGY
ER  -