Columbia subject headings:
Energy industries--United States--Finance--Statistics.
Energy industries--United States--Statistics.
Petroleum industry and trade--United States--Finance--Statistics.
Petroleum products--United States--Statistics.
Harvard subject headings:
Energy industries--United States--Finance--Statistics.
Energy industries--United States--Statistics.
Petroleum industry and trade--United States--Finance--Statistics.
Petroleum products--United States--Statistics.
Princeton subject headings: