TY  - BOOK
AU  - Tyrrell,G.W.
TI  - The principles of petrology: an introduction to the science of rocks,
AV  - QE431 .T8 1975
PY  - 1975///]
CY  - London
PB  - Chapman and Hall
KW  - Petrology
N1  - First published 1926
ER  -