Columbia subject headings:
Harvard subject headings:
Diderot, Denis, 1713-1784--Philosophy--Congresses.
Enlightenment--France--Congresses.
Philosophy, French--18th century--Congresses.
Princeton subject headings:
Diderot, Denis, 1713-1784--Philosophy--Congresses.
Enlightenment--France--Congresses.
Philosophy, French--18th century--Congresses.