Columbia subject headings:
Indo-European philology--Congresses.
Oriental philology--Congresses.
Philosophy, Ancient--Congresses.
Harvard subject headings:
Indo-European philology--Congresses.
Oriental philology--Congresses.
Philosophy, Ancient--Congresses.
Princeton subject headings:
Indo-European philology--Congresses.
Oriental philology--Congresses.
Philosophy, Ancient--Congresses.