Columbia subject headings:
Energy policy--Periodicals.
Power resources--Mathematical models--Periodicals.
Power resources--Periodicals.
Harvard subject headings:
Energy policy--Periodicals
Power resources--Mathematical models--Periodicals.
Power resources--Periodicals
Princeton subject headings:
Energy policy--Periodicals.
Periodicals.
Power resources--Mathematical models--Periodicals.
Power resources--Periodicals.