TY  - BOOK
AU  - EHLERS ERNEST G
AU  - BLATT HARVEY
TI  - Petrology: Igneous, Sedimentary, and Metamorphic
U1  - H2 
PY  - 1987///
CY  - DELHI
PB  - CBS PUBLISHERS & DISTRIBUTORS
KW  - PETROLOGY --TEXTBOOKS
ER  -