Columbia subject headings:
Harvard subject headings:
Language and culture--Congresses.
Language and history--Congresses.
Philology--History--19th century--Congresses.
Philology--History--20th century--Congresses.
Princeton subject headings:
Language and culture--Congresses.
Language and history--Congresses.
Philology--History--19th century--Congresses.
Philology--History--20th century--Congresses.