Columbia subject headings:
China--Foreign relations--1912-1949.
China--Foreign relations--Germany.
Germany--Foreign relations--20th century.
Germany--Foreign relations--China.
Harvard subject headings:
China--Foreign relations--1912-1949
China--Foreign relations--Germany.
Germany--Foreign relations--20th century.
Germany--Foreign relations--China.
Princeton subject headings:
China--Foreign relations--1912-1949.
China--Foreign relations--Germany.
Germany--Foreign relations--20th century.
Germany--Foreign relations--China.