Columbia subject headings:
Harvard subject headings:
Germany (East)--Politics and government--1989-1990.
Germany--History--Unification, 1990.
Germany--Social conditions--1990-
Political culture--Germany--History--20th century.
Princeton subject headings:
Germany--Economic conditions--1990---Public opinion.
Germany--History--Unification, 1990--Public opinion.
Germany--Social conditions--1990---Public opinion.