Columbia subject headings:
Germany. Auswärtiges Amt. Nazi-Soviet relations, 1939-1941.
World War, 1939-1945--Diplomatic history.
World War, 1939-1945--Soviet Union.
Harvard subject headings:
Germany. Auswärtiges Amt. Nazi-Soviet relations, 1939-1941.
World War, 1939-1945--Diplomatic history.
World War, 1939-1945--Soviet Union.
Princeton subject headings: