Columbia subject headings:
Energy conservation--United States--Statistics.
Power resources--United States--Statistics.
Harvard subject headings:
Energy consumption--United States--Forecasting--Statistics--Periodicals.
Power resources--Forecasting--Statistics--Periodicals.
Power resources--United States--Forecasting--Statistics--Periodicals.
Princeton subject headings:
Periodicals.
Power resources--Periodicals.
Power resources--United States--Periodicals.