TY  - GEN
AU  - Duff , P. McL. D.
TI  - Holmes principles of physical geology
SN  - 0748743812
U1  - 551 
PY  - 1978///
CY  - UK
PB  - Stanley Thornes 
KW  - PHYSICAL GEOLOGY
KW  - EARTH SCIENCE
KW  - THE DYNAMIC EARTH
KW  - EARTH HISTORY
KW  - FUEL
KW  - EROSION
KW  - NATURAL PHENOMENA
ER  -