Columbia subject headings:
Families--France--History--19th century.
Family policy--France--History--19th century.
France--Social conditions--19th century.
Working class--France--History--19th century.
Harvard subject headings:
Families--France--History--19th century.
Family policy--France--History--19th century.
France--Social conditions--19th century.
Working class families--France--History--19th century.
Working class--France--History--19th century
Princeton subject headings:
Families--France--History--19th century.
Family policy--France--History--19th century.
France--Social conditions--19th century.
Working class--France--History--19th century.