Columbia subject headings:
Petroleum industry and trade--Gulf Coast (U.S.)
Petroleum--Refining--Gulf Coast (U.S.)
Harvard subject headings:
Petroleum industry and trade--Gulf Coast (U.S.)
Petroleum--Gulf Coast (U.S.)--Refining.
Petroleum--Refining--Gulf Coast (U.S.)
Princeton subject headings:
Petroleum industry and trade--Gulf coast (United States).
Petroleum--Gulf coast (United States)--Refining.