Columbia subject headings:
Philosophy, French--19th century.
Philosophy, French--20th century.
Harvard subject headings:
France--Intellectual life--19th century.
France--Intellectual life--20th century.
Philosophy, French--19th century.
Philosophy, French--20th century.
Princeton subject headings:
France--Intellectual life--19th century.
France--Intellectual life--20th century.
Philosophy, French--19th century.
Philosophy, French--20th century.