Columbia subject headings:
Germany--Foreign relations--Soviet Union.
Mirbach-Harff, Wilhelm, Graf von, 1871-1918.
Soviet Union--Foreign relations--Germany.
Soviet Union--Politics and government.
Harvard subject headings:
Princeton subject headings:
Germany--Foreign relations--Soviet Union.
Mirbach-Harff, Wilhelm, Graf von, 1871-1918.
Soviet Union--Foreign relations--Germany.
Soviet Union--Politics and government--1917-1936.