TY  - BOOK
AU  - Ernest G. Ehlers and Harvey Blatt
TI  - Petrology : igneous sedimentary and metamorphic
SN  - 9788123910321
U1  - 552 EHL-P 
PY  - 2019///
CY  - New Delhi
PB  - CBS
KW  - Petrology
KW  - Geology
ER  -