Columbia subject headings:
Europe--Economic conditions--1945-
Europe--Politics and government--1989-
Europe--Social conditions--20th century.
Public opinion--Europe.
Harvard subject headings:
Europe--Economic conditions--1945---Congresses.
Europe--Politics and government--1989---Congresses.
Europe--Social conditions--20th century--Congresses.
Public opinion--Europe--Congresses
Princeton subject headings:
Europe--Economic conditions--1945---Congresses.
Europe--Politics and government--1989---Congresses.
Europe--Social conditions--20th century--Congresses.
Public opinion--Europe--Congresses.