TY  - BOOK
AU  - Tyrrell,G W
TI  - The principles of petrology. : : An introduction to the science of rocks. / 
SN  - 041211500x
U1  - 552 
PY  - 1975///
CY  - New York
PB  - Chapman and Hall
KW  - Petrology , Geography, Earth Science
N1  - Index
ER  -