Columbia subject headings:
China--Foreign relations--Japan--Ryukyu Islands.
China--History--19th century.
China--Relations--Japan.
Ryukyu Islands--Foreign relations--China.
Ryukyu Islands--Politics and government.
Harvard subject headings:
China--History--19th century
China--Relations--Japan
Ryukyu Islands--History--Sources.
Ryukyu Islands--Relations--China.
Princeton subject headings: