Columbia subject headings:
Berlin (Germany)--History--1945-1990.
Berlin (Germany)--Politics and government--1945-1990.
Germany--History--1945-1955.
World politics--1945-1955.
Harvard subject headings:
Berlin (Germany)--History--1945-1990
Berlin (Germany)--Politics and government--1945-1990
World politics--1945-1955
Princeton subject headings: