TY  - GEN
AU  - Duff ,  P. McL. D.  
TI  - Holmes' principles of physical geology
SN  - 0412461900
U1  - 551.01 
PY  - 1992///
CY  - London
PB  - ELBS with Chapman and Hall
KW  - Geology - Theory
KW  - Earth Sciences
ER  -