TY  - BOOK
AU  - Yen,T.F.
TI  - The role of trace metals in petroleum
SN  - 0250400618
U1  - 665.5 
PY  - 1975///
CY  - Michigan
PB  - Ann Arbor Science Pub.
KW  - Petroleum
KW  - Petroleum Chemicals
KW  - Petroleum products
N1  - Includes index
ER  -