TY  - BOOK
AU  - Gilluly,James
AU  - Waters,A.C.
AU  - Woodford,A.O.
TI  - Principles of geology
T2  - Books in geology
U1  - 550 
PY  - 1959///
CY  - San Francisco
PB  - W. H. Freeman
KW  - GEOLOGIA
ER  -