TY  - BOOK
AU  - Bullen ,K E   .
AU  - Bolt ,Bruce A   .
TI  - An introduction to the theory of seismology / 
SN  - 0521283892
U1  - 551.22 
PY  - 1985///
CY  - Cambridge : 
PB  - Cambridge University Press , 
KW  - SEISMOLOGY
N1  - Includes bibliography and index
ER  -