Columbia subject headings:
Harvard subject headings:
Japan--Ethnic relations--History--20th century.
Japan--Ethnic relations.
Koreans--Japan--History
Koreans--Japan--Social conditions--20th century.
Minorities--Japan--History--20th century.
Minorities--Japan.
Okinawa-ken (Japan)--History.
Okinawa-ken (Japan)--Social conditions--20th century.
Princeton subject headings:
Japan--Ethnic relations.
Koreans--Japan--History.
Minorities--Japan.
Okinawa-ken (Japan)--History.