Columbia subject headings:
Linguistics--History--20th century.
Trubet︠s︡koĭ, Nikolaĭ Sergeevich, kni︠a︡zʹ, 1890-1938.
Harvard subject headings:
Linguistics--Congresses
Slavic philology--Congresses.
Trubet︠s︡koĭ, Nikolaĭ Sergeevich, kni︠a︡zʹ, 1890-1938
Princeton subject headings:
Linguistics--History--20th century.
Trubet︠s︡koĭ, Nikolaĭ Sergeevich, kni︠a︡zʹ, 1890-1938.