Columbia subject headings:
Europe--Foreign relations--Italy.
European Union--Italy.
Italy--Foreign relations--Europe.
Referendum--Italy--History--20th century.
Harvard subject headings:
Europe--History--20th century
European federation
Italians--Europe--History--20th century.
Referendum--Europe--History--20th century.
Princeton subject headings:
European Economic Community--Italy.
Italy--Economic conditions--1976-1994.