Columbia subject headings:
Alani--Congresses.
Iranian philology--Congresses.
Ossetic philology--Congresses.
Harvard subject headings:
Abaev, V. I. (Vasiliĭ Ivanovich), 1900---Congresses.
Iranian languages--Congresses.
Princeton subject headings:
Abaev, V. I. (Vasiliĭ Ivanovich), 1900-2001--Congresses.
Iranian languages--Congresses.