Columbia subject headings:
Income distribution--France--History--20th century.
Income tax--France--History--20th century.
Income--France--History--20th century.
Harvard subject headings:
Equality--France--History--20th century.
Income distribution--France--History--20th century.
Income tax--France--History--20th century.
Income--France--History--20th century.
Princeton subject headings:
Income distribution--France--History--20th century.
Income tax--France--History--20th century.
Income--France--History--20th century.