TY  - BOOK
AU  -  Richter,C.F.
TI  - Elementary Seismology
U1  - 551.22 23
PY  - 1958///
CY  - London
PB  - W. H. Freeman & Company
KW  - Seismology
N1  - Includes indexs (p.: 739 - 768)
ER  -