Columbia subject headings:
East Asia--Commerce--History.
Feudalism--Japan--History.
Japan--Politics and government--1600-1868.
Ryukyu Islands--Politics and government.
Harvard subject headings:
East Asia--Commerce--History.
Feudalism--Japan--History
Japan--Politics and government--1600-1868.
Ryukyu Islands--Politics and government.
Princeton subject headings:
East Asia--Commerce--History.
Feudalism--Japan--History.
Japan--Politics and government--1600-1868.
Ryukyu Islands--Politics and government.