Columbia subject headings:
Energy consumption--United States--Statistics.
Oil well drilling--United States--Statistics.
Petroleum products--Prices--United States.
Power resources--United States--Statistics.
Harvard subject headings:
Energy consumption--United States--Statistics.
Petroleum products--Prices--United States
Power resources--United States--Statistics.
Princeton subject headings:
Energy consumption--United States--Statistics.
Oil well drilling--United States--Statistics.
Petroleum products--Prices--United States.
Power resources--United States--Statistics.
Statistics.