Columbia subject headings:
Harvard subject headings:
Europe--Politics and government--1945-
European Economic Community.
Nationalism--Europe--History--20th century
Regionalism--Europe--History--20th century.
World politics--1945-
Princeton subject headings:
Europe--Politics and government--20th century.
European Economic Community.
Nationalism--Europe--History--20th century.
Regionalism--Europe--History--20th century.
World politics--1945-1989.