Columbia subject headings:
Harvard subject headings:
Germany (East)--History.
Germany (East)--Politics and government--1989-1990.
Germany--History--Unification, 1990.
Protest movements--Germany (East)
Princeton subject headings:
Germany (East)--History.
Germany (East)--Politics and government--1989-1990.
Germany--History--Unification, 1990.
Protest movements--Germany (East)