Columbia subject headings:
Enlightenment--Europe--Congresses.
Historiography--Congresses.
Harvard subject headings:
Encyclopedias and dictionaries--History--Congresses.
Enlightenment--Europe--Congresses
Language and languages--Etymology--Lexicography--Congresses.
Princeton subject headings:
Encyclopedias and dictionaries--History and criticism--Congresses.
Enlightenment--Europe--Congresses.
Learning and scholarship--History--Congresses.
Lexicography--Congresses.