Columbia subject headings:
Child labor--France--History--19th century.
Child labor--Law and legislation--France--History--19th century.
Harvard subject headings:
Child labor--France--History--19th century.
Child labor--Law and legislation--France--History--19th century.
Princeton subject headings:
Child labor--France--History--19th century.
Child labor--Law and legislation--France--History--19th century.