Columbia subject headings:
Germany--Foreign relations--Soviet Union.
Germany. Treaties, etc. 1939 August 23.
Soviet Union--Foreign relations--Germany.
World War, 1939-1945--Diplomatic history.
Harvard subject headings:
Germany. Treaties, etc. 1939 August 23.
World War, 1939-1945--Diplomatic history.
Princeton subject headings:
Germany. Treaties, etc. 1939 August 23
World War, 1939-1945--Diplomatic history.