Columbia subject headings:
Berlin (Germany)--Politics and government--1945-1990.
German reunification question (1949-1990)
Harvard subject headings:
Berlin (Germany)--Politics and government--1945-1990
German reunification question (1949-1990)
Princeton subject headings:
Berlin (Germany)--History--1945-1990.
Berlin (Germany)--Politics and government--1945-1990.
German reunification question (1949-1990)