Columbia subject headings:
Dʹi︠a︡konov, Igorʹ Mikhaĭlovich.
Middle East--Civilization--To 622--Congresses.
Middle East--Languages--Congresses.
Harvard subject headings:
Dʹi︠a︡konov, I. M. (Igorʹ Mikhaĭlovich)
Middle East--Civilization--To 622--Congresses.
Middle East--Languages--Congresses.
Princeton subject headings: