TY  - BOOK
AU  - G.W. Tyrrell
TI  - Principles of petrology  : An introduction to the science of rocks
U1  - 552 
PY  - 1952///
CY  - London
PB  - Methuen and Co Limited
N1  - G.W. Tyrrell: Principles of petrology  : An introduction to the science of rocks.  London.  Methuen and Co Limited, 1952.--(552TYR)
ER  -