Columbia subject headings:
European Economic Community countries--Foreign relations--Treaties.
European Economic Community countries--Foreign relations.
International agencies--European Economic Community countries.
Harvard subject headings:
European Economic Community countries--Foreign relations--Treaties.
European Economic Community countries--Foreign relations.
International agencies--European Economic Community countries.
Princeton subject headings:
European Economic Community countries--Foreign relations--Treaties.
European Economic Community countries--Foreign relations.
International agencies--Europe.