Columbia subject headings:
Labor policy--Great Britain--History.
Labor policy.
Labor unions--Political activity--Great Britain--History.
Labor unions--Political activity.
Harvard subject headings:
Labor policy--Great Britain--History.
Labor policy.
Labor unions--Political activity
Labor unions--Political activity--Great Britain--History
Princeton subject headings:
Labor policy--Great Britain--History.
Labor policy.
Labor unions--Political activity--Great Britain--History.
Labor unions--Political activity.