Columbia subject headings:
Energy industries--European Economic Community countries--Statistics--Periodicals.
Power resources--European Economic Community countries--Statistics--Periodicals.
Harvard subject headings:
Energy industries--European Economic Community countries--Statistics--Periodicals.
Power resources--European Economic Community countries--Statistics--Periodicals.
Princeton subject headings:
Energy industries--European Economic Community countries--Statistics--Periodicals.
Power resources--European Economic Community countries--Statistics--Periodicals.