Columbia subject headings:
Child development--France--History--19th century.
Children--France--History--19th century.
Children--France--Social conditions--19th century.
Education--France--Experimental methods--History--19th century.
France--Social conditions--19th century.
Socialism and education--France--History--19th century.
Harvard subject headings:
Children--Social conditions--19th century.
Utopian socialism--History--19th century.
Princeton subject headings: