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