Columbia subject headings:
Harvard subject headings:
Educators--France--Biography
France--Social conditions--19th century.
Malthusianism.
Robin, Paul, 1837-1912.
Social reformers--France--Biography.
Socialists--France--Biography
Princeton subject headings:
Educators--France--Biography.
France--Social conditions--19th century.
Malthusianism.
Robin, Paul, 1837-1912.
Social reformers--France--Biography.
Socialists--France--Biography.