Columbia subject headings:
China--Foreign relations--1912-1949.
China--Foreign relations--Russia.
Russia--Foreign relations--1894-1917.
Russia--Foreign relations--China.
Harvard subject headings:
China--Foreign relations--1912-1949
China--Foreign relations--Russia.
Russia--Foreign relations--1894-1917.
Russia--Foreign relations--China
Princeton subject headings:
China--Foreign relations--1912-1949.
China--Foreign relations--Russia.
Russia--Foreign relations--1894-1917.
Russia--Foreign relations--China.