Columbia subject headings:
Russia--Church history.
Harvard subject headings:
Church history--Middle Ages, 600-1500
Russia--History--To 1533.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--History.
Soviet Union--Church history.
Princeton subject headings:
Christianity--Kievan Rus--History.
Kievan Rus--Church history.