TY  - BOOK
AU  - Levorsen,Arville Irving
TI  - Geology of petroleum / 
U1  - 553.28 LEV 
PY  - 1954///, repr.; 1958
CY  - San Francisco : 
PB  - W. H. Freeman , 
KW  - Petroleum
KW  - Geology
N1  -  Includes bibliography
ER  -