TY  - GEN
AU  - Leverson, A.I 
TI  - Geology of petroleum
T2  - A series if books in geology 
SN  - 9788123909318
U1  - 553.28  
PY  - 2004///
CY  - New Delhi
PB  - CBS Publishers & Distributors
KW  -  Economic geology
KW  - Petroleum
KW  - Geology
KW  - Migration
KW  - Petrology
N1  - It includes index
ER  -