Columbia subject headings:
Labor unions--Great Britain--Bibliography--Catalogs.
University of Warwick. Library. Modern Records Centre--Catalogs.
Harvard subject headings:
Labor unions--Great Britain--Bibliography--Catalogs.
Princeton subject headings:
Labor unions--Great Britain--Bibliography--Catalogs.
University of Warwick. Library. Modern Records Centre--Catalogs.
Working class--Great Britain--Bibliography--Catalogs.