Columbia subject headings:
Labor movement--Great Britain--Periodicals.
Labor supply--Great Britain--Periodicals.
Working class--Great Britain--Periodicals.
Harvard subject headings:
Labor movement--Great Britain--Periodicals.
Labor supply--Great Britain--Periodicals.
Working class--Great Britain--Periodicals.
Princeton subject headings:
Labor movement--Great Britain--Periodicals.
Labor supply--Great Britain--Periodicals.
Working class--Great Britain--Periodicals.