TY  - BOOK
AU  - Tyrrell,G.W.
TI  - The Principles of Petrology: An Introduction to the Science of Rock
SN  - 2426311
PY  - 1963///
CY  - Great Britain, UK
PB  - Bound by Orrock & Son Ltd.
KW  - Petrology
N1  - Includes Index
ER  -