Columbia subject headings:
Harvard subject headings:
Japan--Foreign relations--1912-1945.
Japan--Foreign relations--Soviet Union.
Soviet Union--Foreign relations--1917-1945.
Soviet Union--Foreign relations--Japan.
Princeton subject headings:
Japan--Foreign relations--1912-1945.
Japan--Foreign relations--Soviet Union.
Soviet Union--Foreign relations--1917-1945.
Soviet Union--Foreign relations--Japan.