Columbia subject headings:
Harvard subject headings:
Europe--Foreign relations--1945-
Europe--Relations--Germany.
Germany--History--Unification, 1990.
Germany--Politics and government--1945-1990.
Germany--Relations--Europe.
Princeton subject headings:
Germany--History--Unification, 1990.
Germany--Politics and government--1945-1990.
Germany--Politics and government--1990-