TY  - BOOK
AU  - Levorsen,A.I.
AU  - Berry,Frederick A.F.
TI  - Geology of petroleum
T2  - A Series of books in geology
SN  - 9788123909318
AV  - TN870 .L42 1967
PY  - 2004///
CY  - New Delhi
PB  - CBS Publishers, 
KW  - Petroleum
KW  - Geology
N1  - Includes bibliographies
ER  -