Columbia subject headings:
Enlightenment--France--Congresses.
Enlightenment--Germany--Congresses.
Philosophy, French--18th century--Congresses.
Philosophy, French--19th century--Congresses.
Philosophy, German--18th century--Congresses.
Philosophy, German--19th century--Congresses.
Harvard subject headings:
Enlightenment--France--Congresses.
Enlightenment--Germany--Congresses
Philosophy, French--18th century--Congresses.
Philosophy, French--19th century--Congresses.
Philosophy, German--18th century--Congresses.
Philosophy, German--19th century--Congresses.
Princeton subject headings:
Enlightenment--France--Congresses.
Enlightenment--Germany--Congresses.
Philosophy, French--18th century--Congresses.
Philosophy, French--19th century--Congresses.
Philosophy, German--18th century--Congresses.
Philosophy, German--19th century--Congresses.