Columbia subject headings:
Energy conservation--Turkey--Periodicals.
Energy policy--Turkey--Periodicals.
Power resources--Turkey--Periodicals.
Harvard subject headings:
Energy conservation--Turkey--Periodicals.
Energy policy--Turkey--Periodicals.
Power resources--Turkey--Periodicals.
Princeton subject headings:
Energy conservation--Turkey--Periodicals.
Energy policy--Turkey--Periodicals.
Power resources--Turkey--Periodicals.