Columbia subject headings:
Gasoline industry--United States.
Gasoline supply--United States.
Gasoline--Prices--United States.
Petroleum--Refining--Industrial capacity--United States.
Harvard subject headings:
Gasoline industry--United States.
Gasoline supply--United States.
Gasoline--Prices--United States
Petroleum--Refining--Industrial capacity--United States.
Princeton subject headings:
Gasoline industry--United States.
Gasoline supply--United States.
Gasoline--Prices--United States.
Petroleum--Refining--Industrial capacity--United States.