TY  - BOOK
AU  - Gilluly,James
AU  - Waters,Aaron C.
AU  - Woodford,A.O.
TI  - Principles of geology
U1  - 550 
PY  - 1951///
CY  - San Fransisco
PB  - W.H . Freeman
KW  - Geogaphy
KW  - Geology
ER  -