TY  - GEN
AU  - Ballard, Robert D
TI  - Exploring our living planet
U1  - 551.136 
PY  - 1983///
CY  - Washington
PB  - National geographic society
KW  - Planet earth
KW  - Fire
KW  - Plate tectonics
KW  - Geology
KW  - Crust
KW  - Mountains
ER  -