Columbia subject headings:
Harvard subject headings:
Buraku people--Japan--Hiroshima-ken--History.
Labor movement--Japan--Hiroshima-ken--History.
Labor unions--Japan--Hiroshima-ken--History.
Labor--Japan--Hiroshima-ken--History.
Working class--Japan--Hiroshima-ken--History.
Princeton subject headings:
Buraku people--Japan--Hiroshima-ken--History.
Labor movement--Japan--Hiroshima-ken--History.
Labor unions--Japan--Hiroshima-ken--History.
Labor--Japan--Hiroshima-ken--History.
Working class--Japan--Hiroshima-ken--History.