TY  - BOOK
AU  - Hartwig, G. .
TI  - Volcanoes and Earthquakes
U1  - 551.21 
PY  - 1893///
CY  - London
PB  - Longmans Green & Co.
KW  - Geology
KW  - Volcanoes and Earthquakes
KW  - G-Geology
ER  -