Columbia subject headings:
Harvard subject headings:
Europe--Foreign relations--Germany (West)--Congresses.
Europe--Foreign relations--Italy--Congresses.
European federation--Congresses
Germany (West)--Foreign relations--Europe--Congresses.
Italy--Foreign relations--Europe--Congresses.
Princeton subject headings:
European Economic Community--Economic integration--Congresses.
Germany--Foreign relations--Italy--Congresses.
Italy--Foreign relations--Germany--Congresses.