TY  - BOOK
AU  - Purdy, G. A.
TI  - Petroleum: prehistoric to petrochemicals
U1  - 665.5 
PY  - 1958///
CY  - Toronto
PB  - Copp Clark
KW  - Petroleum
KW  - Petroleum industry & trade
KW  - Petroleum industry & trade -- Canada
ER  -