TY  - BOOK
AU  - Purdy,G.A.
TI  - Petroleum: prehistoric to petrochemicals
U1  - 665.5 
PY  - 1958///
CY  - Vancouver
PB  - Copp Clark Pub.
KW  - Petroleum
KW  - History
KW  - Refining
KW  - Petroleum products
N1  - Includes index
ER  -