Columbia subject headings:
Antitrust law--United States.
Petroleum industry and trade--United States.
Petroleum law and legislation--United States.
Petroleum--Pipelines--Law and legislation--United States.
Harvard subject headings:
Princeton subject headings:
Antitrust law--United States.
Petroleum industry and trade--United States.
Petroleum law and legislation--United States.
Petroleum pipelines--Law and legislation--United States.