Columbia subject headings:
Harvard subject headings:
Kievan Rus--History--Mongol Invasion, 1237-1241--Historiography.
Kievan Rus--History--Mongol Invasion, 1237-1241.
Mongols--Russia--History.
Russia--History--1237-1480.
Russia--Relations--Asia, Central.
Princeton subject headings:
Asia, Central--Relations--Russia.
Kievan Rus--History--Mongol Invasion, 1237-1241--Historiography.
Kievan Rus--History--Mongol Invasion, 1237-1241.
Mongols--Russia--History.
Russia--History--1237-1480.
Russia--Relations--Asia, Central.