Columbia subject headings:
France--History--Louis Philippe, 1830-1848.
France--Social conditions--19th century.
Industries--France--History--19th century.
Harvard subject headings:
France--History--Louis Philippe, 1830-1848.
France--Social conditions--19th century.
Industries--France--History--19th century.
Princeton subject headings:
France--History--Louis Philippe, 1830-1848.