Columbia subject headings:
Harvard subject headings:
Anti-communist movements--Japan--History.
Communists--Japan--Political activity--History.
Educators--Japan--Political activity--History.
Labor unions--Japan--Political activity--History.
Political purges--Japan--History.
Princeton subject headings:
Anti-communist movements--Japan--History.
Communists--Japan--Political activity--History.
Educators--Japan--Political activity--History.
Labor unions--Japan--Political activity--History.
Political purges--Japan--History.