Columbia subject headings:
China--Foreign relations--Soviet Union.
China--Politics and government--1912-1928.
China--Politics and government--1928-1937.
China--Politics and government--1937-1945.
Soviet Union--Foreign relations--China.
Harvard subject headings:
China--History--20th century
Military assistance, Soviet--China.
Russians--China.
Princeton subject headings:
China--Foreign relations--Soviet Union.
China--Politics and government--1912-1928.
China--Politics and government--1928-1937.
China--Politics and government--1937-1945.
Soviet Union--Foreign relations--China.