Columbia subject headings:
Eurasian school.
Kievan Rus--History--Mongol Invasion, 1237-1241.
Minorities--Russia.
Nationalism--Europe.
Nationalism--Russia.
Russia--Civilization.
Russia--History--1237-1480.
Russia--History--Philosophy.
Harvard subject headings:
Comparative linguistics.
Cross-cultural studies
Trubet︠s︡koĭ, Nikolaĭ Sergeevich, kni︠a︡zʹ, 1890-1938
Princeton subject headings:
Eurasian school.
Kievan Rus--History--Mongol Invasion, 1237-1241.
Minorities--Russia.
Nationalism--Europe.
Nationalism--Russia.
Russia--Civilization.
Russia--History--1237-1480.
Russia--History--Philosophy.