TY  - BOOK
AU  - Leffler, William L
AU  - Leffler, William L
TI  - Petroleum refining in nontechnical language/ William L. Leffler
SN  - 9781593701581
AV  - TP692.3 .B873 2008 
U1  - TP692.3 .B873 2008 
PY  - 2008///
PB  - Tulsa, Okla. : PennWell, c
ER  -