Columbia subject headings:
Berlin (Germany)--Politics and government--1945-1990--Congresses.
German reunification question (1949-1990)--Congresses.
World War, 1939-1945--Peace--Congresses.
Harvard subject headings:
Princeton subject headings:
Berlin (Germany)--History--1945-1990--Congresses.
Berlin (Germany)--Politics and government--1945-1990--Congresses.
German reunification question (1949-1990)--Congresses.
World War, 1939-1945--Peace--Congresses.