Columbia subject headings:
Harvard subject headings:
Agriculture and state--European Economic Community countries--Congresses.
European Economic Community--Greece--Congresses.
European Economic Community--Portugal--Congresses.
European Economic Community--Spain--Congresses.
Industrial policy--European Economic Community countries--Congresses.
Princeton subject headings:
European Economic Community countries.
European Economic Community--Greece.
European Economic Community--Portugal.
European Economic Community--Spain.