PETROLEUM REFINING

Latest 424B4 SEC Filings
Prospectus [Rule 424(b)(4)]

CONOCO INC /DE, 424B4, 1998-10-22
FRONTIER OIL CORP /NEW/, 424B4, 1998-05-20
HOLLY CORP, 424B4, 1995-06-28
ATLANTIC RICHFIELD CO /DE, 424B4, 1994-08-02


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