Columbia subject headings:
Enlightenment--France.
Helvétius, 1715-1771.
Holbach, Paul Henri Thiry, baron d', 1723-1789.
Materialism--France--History--18th century.
Philosophers--France--Biography.
Philosophy, French--History--18th century.
Harvard subject headings:
Enlightenment--France
Helvétius, 1715-1771.
Holbach, Paul Henri Thiry, baron d', 1723-1789.
Materialism--France--History--18th century.
Philosophers--France--Biography
Philosophy, French--18th century.
Princeton subject headings: