Columbia subject headings:
China--Foreign relations--Russia.
China--History--Republic, 1912-1949.
Russia--Foreign relations--China.
Harvard subject headings:
China--Foreign relations--Russia.
China--Foreign relations--Soviet Union.
China--History--1912-1937.
Russia--Foreign relations--China
Soviet Union--Foreign relations--China.
Princeton subject headings:
China--Foreign relations--Russia.
China--History--1912-1937.
Russia--Foreign relations--China.