Columbia subject headings:
Germany--History--1918-1933.
Germany--Military relations--Soviet Union.
Soviet Union--History--1917-1936.
Soviet Union--Military relations--Germany.
Harvard subject headings:
Germany--History--1918-1933.
Germany--Military relations--Soviet Union.
Soviet Union--History--1917-1936.
Soviet Union--Military relations--Germany.
Princeton subject headings:
Germany--History--1918-1933.
Germany--Military relations--Soviet Union.
Soviet Union--History--1917-1936.
Soviet Union--Military relations--Germany.