TY  - BOOK
AU  - Udias, Agustin
TI  - Principles of seismology
SN  - 0521624789
AV  - QE 534.2 Udi 
PY  - 1999///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Seismology
KW  - GEOLOGY--STUDY AND TEACHING
N1  - Bibliography
ER  -