Columbia subject headings:
Harvard subject headings:
Germany (East)--Foreign relations--Germany (West)
Germany (East)--Politics and government--1989-1990.
Germany (West)--Foreign relations--Germany (East)
Germany (West)--Politics and government.
Princeton subject headings:
Germany (East)--Politics and government--1989-1990.
Germany (West)--Politics and government--1982-1990.
Germany--History--Unification, 1990.