Columbia subject headings:
Harvard subject headings:
France--Social conditions--18th century.
France--Social conditions--19th century.
Working class--France--History--18th century.
Working class--France--History--19th century
Princeton subject headings:
France--Social conditions--18th century.
France--Social conditions--19th century.
Working class--France--History--18th century.
Working class--France--History--19th century.