Columbia subject headings:
Harvard subject headings:
Berlin (Germany)--History--Blockade, 1948-1949
Berlin (Germany)--Politics and government--1945-1990
Germany--History--20th century.
Reuter, Ernst, 1889-1953.
Princeton subject headings:
Berlin (Germany)--History--Blockade, 1948-1949.
Berlin (Germany)--Politics and government--1945-1990.
Germany--History--20th century.
Reuter, Ernst, 1889-1953.