Columbia subject headings:
Harvard subject headings:
China--Foreign relations--Germany--Prussia.
China--Foreign relations--Germany.
Germany--Foreign relations--China.
Germany--Foreign relations--Germany--Prussia.
Prussia (Germany)--Foreign relations--China.
Prussia (Germany)--Foreign relations--Germany.
Princeton subject headings:
China--Foreign relations--Germany--Prussia--History--19th century.
Prussia (Germany)--Foreign relations--China--History--19th century.