Columbia subject headings:
Europe--Economic integration.
Europe--Politics and government--1945-
European Union.
Utopias--Europe--History.
Harvard subject headings:
Europe--Economic integration.
Europe--Politics and government--1945-
European Union
Utopias--Europe--History.
Princeton subject headings:
Europe--Economic integration.
Europe--Politics and government--1945-
European Union.
Utopias--Europe--History.