PETROLEUM REFINING

Latest 424B1 SEC Filings
Prospectus [Rule 424(b)(1)]

MAPCO INC, 424B1, 1997-03-03
QUAKER STATE CORP, 424B1, 1997-02-20
QUAKER STATE CORP, 424B1, 1995-10-20
CROWN CENTRAL PETROLEUM CORP /MD/, 424B1, 1995-01-19
SUN CO INC, 424B1, 1994-11-23
LYONDELL PETROCHEMICAL CO, 424B1, 1994-08-03
VALERO ENERGY CORP, 424B1, 1994-03-17


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