TY  - BOOK
AU  - Tissot B P
AU  -  Welte D H
TI  - Petroleum formation and occurrence
U1  - H7:(F555), M4 
PY  - 1984///
CY  - Berlin
PB  - Springer-Verlag         
KW  -  Economic geology
KW  - Geology
N1  - Includes bibliography
ER  -