TY  - BOOK
AU  - TYRRELL, G. W.
TI  - THE PRINCIPLES OF PETROLOGY
T2  - 0
U1  - 552 
PY  - 1978///
CY  - LONDON-U.S.A.
PB  - CHAPMAN AND HALL
KW  - CIENCIAS PURAS
N1  - IGNEOUS ROCKS
ER  -