TY  - BOOK
AU  - Richter,Charles
TI  - Elementary seismology
T2  - A Series of books in geology
AV  - QE534 .R5
U1  - 551.22* 
PY  - 1958///
CY  - San Francisco
PB  - W. H. Freeman
KW  - Seismology
N1  - Includes bibliography
ER  -