Columbia subject headings:
Harvard subject headings:
Berlin (Germany)--History--1918-1945
Berlin (Germany)--History--1945-1990
World War, 1939-1945--Campaigns--Germany.
Princeton subject headings:
Berlin (Germany)--History--1918-1945.
Berlin (Germany)--History--1945-1990.
World War, 1939-1945--Campaigns--Germany.