TY  - BOOK
AU  - Jeffreys Harold
TI  - Collected papers of Sir Harold Jeffreys on geophysics and other sciences: Observational seismology
U1  - 551.08 
PY  - 1973///
CY  - London
PB  - Gordon and Breach
KW  - Geology
KW  - Seismology
ER  -