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