Columbia subject headings:
Harvard subject headings:
Enlightenment--Europe, German-speaking--Congresses.
Enlightenment--Germany--Congresses
Europe, German-speaking--History--19th century--Congresses.
Europe, German-speaking--Intellectual life--19th century--Congresses.
Princeton subject headings:
Enlightenment--Influences--Congresses.
History--Philosophy--Congresses.
Knowledge, Sociology of--History--Congresses.
Knowledge, Theory of--Congresses.