Columbia subject headings:
European Economic Community countries--Foreign economic relations--Mediterranean Region.
European Economic Community--Greece.
European Economic Community--Mediterranean Region.
European Economic Community--Portugal.
European Economic Community--Spain.
Harvard subject headings:
European Economic Community--Greece.
European Economic Community--Portugal.
European Economic Community--Spain.
Princeton subject headings:
European Economic Community--Greece.
European Economic Community--Portugal.
European Economic Community--Spain.