Columbia subject headings:
Coal trade--European Economic Community countries--Periodicals.
European Economic Community--Periodicals.
European Union countries--Periodicals.
European Union--Periodicals.
Steel industry and trade--European Economic Community countries--Periodicals.
Harvard subject headings:
Coal trade--European Economic Community countries--Periodicals.
European Economic Community--Periodicals.
European Union countries--Periodicals.
European Union--Periodicals.
Steel industry and trade--European Economic Community countries--Periodicals.
Princeton subject headings:
European Economic Community countries--Periodicals.
European Union countries--Periodicals.
Periodicals.