Columbia subject headings:
Harvard subject headings:
Dublin (Ireland)--Social conditions--20th century.
Dublin Lockout, Dublin, Ireland, 1913.
Ireland--History--1910-1921.
Labor unions--Ireland--Dublin--History--20th century.
Princeton subject headings:
Dublin (Ireland)--Social conditions--20th century.
Dublin Lockout, Dublin, Ireland, 1913.
Ireland--History--1910-1921.
Labor unions--Ireland--Dublin--History--20th century.