Columbia subject headings:
Youth--Employment--Japan--Okinawa-ken--History--21st century.
Youth--Japan--Okinawa-ken--Social conditions--21st century.
Harvard subject headings:
Construction workers--Japan--Okinawa-ken.
Okinawa-ken (Japan)--Economic conditions.
Okinawa-ken (Japan)--Social conditions.
Okinawa-ken (Japan)--Social life and customs.
Sex-oriented businesses--Japan--Okinawa-ken.
Princeton subject headings:
Construction workers--Japan--Okinawa-ken.
Okinawa-ken (Japan)--Economic conditions.
Okinawa-ken (Japan)--Social conditions.
Okinawa-ken (Japan)--Social life and customs.
Sex industry--Japan--Okinawa-ken.