Columbia subject headings:
Harvard subject headings:
Military bases, American--Okinawa-ken.
Okinawa-ken (Japan)--Social conditions.
Working class--Japan--Okinawa-ken--Political activity.
Princeton subject headings:
Military bases, American--Okinawa-ken.
Okinawa-ken (Japan)--Social conditions.
Working class--Japan--Okinawa-ken--Political activity.