Columbia subject headings:
Labor movement--France--History--18th century.
Labor movement--France--History--19th century.
Working class--France--History--18th century.
Working class--France--History--19th century.
Harvard subject headings:
Blanc, Louis, 1811-1882. Organisation du travail.
Labor movement--France--History--18th century.
Labor movement--France--History--19th century.
Working class--France--History--18th century.
Working class--France--History--19th century
Princeton subject headings:
Labor movement--France--History--18th century.
Labor movement--France--History--19th century.
Working class--France--History--18th century.
Working class--France--History--19th century.