Columbia subject headings:
Great Britain--Social conditions--20th century.
Industries--Great Britain--History--20th century.
Working class--Great Britain--History--20th century.
Harvard subject headings:
Great Britain--Social conditions--20th century.
Industries--Great Britain--History--20th century
Working class--Great Britain--History--20th century
Princeton subject headings:
Great Britain--Social conditions--20th century.
Industries--Great Britain--History--20th century.
Working class--Great Britain--History--20th century.