Columbia subject headings:
Ryukyu Islands--History--To 1879.
Ryukyu Islands--Politics and government.
Harvard subject headings:
Okinawa-ken (Japan)--History.
Ryukyu Islands--History--To 1879.
Ryukyu Islands--Politics and government.
Princeton subject headings:
Okinawa-ken (Japan)--History.
Ryukyu Islands--History--To 1879.
Ryukyu Islands--Politics and government.