Columbia subject headings:
Harvard subject headings:
Slavic languages.
Slavic philology.
Zhelezni︠a︡k, I. M. (Irina Mikhaĭlovna)
Princeton subject headings:
Slavic languages.
Slavic philology.
Zhelezni︠a︡k, I. M. (Irina Mikhaĭlovna)