TY  - BOOK
AU  - A.K  Hatch,F.H and A.K Wells
TI  - Petrology of the igneous rocks
SN  - 004 5 52008 9
AV  - QE 431.2.H37 1972 
PY  - 1972///
CY  - George:allen and unwin
PB  - Thomas murby and co
ER  -