Columbia subject headings:
Kievan Rus--Foreign relations.
Kievan Rus--History--862-1237.
Russia--Foreign relations.
Russia--History--To 1533.
Harvard subject headings:
Kievan Rus--Civilization.
Kievan Rus--Foreign relations.
Kievan Rus--History--862-1237.
Russia--History--To 1533.
Princeton subject headings: