Columbia subject headings:
Berlin (Germany)
Berlin (Germany)--History--1945-1990.
Harvard subject headings:
Berlin (Germany)
Berlin (Germany)--History--1945-1990
Berlin (Germany)--Politics and government--1945-1990
Germany (East)--Politics and government.
Germany (East)--Social conditions.
Princeton subject headings:
Berlin (Germany)--History--1945-1990.
Berlin (Germany)--Politics and government--1945-1990.