Columbia subject headings:
Russia--Civilization--Encyclopedias.
Russia--History--1533-1613--Encyclopedias.
Russia--History--To 1533--Encyclopedias.
Harvard subject headings:
Kievan Rus--Civilization--Encyclopedias.
Russia--Civilization--Encyclopedias.
Russia--History--To 1533--Encyclopedias.
Slavs, Eastern--Civilization--Encyclopedias.
Princeton subject headings:
Kievan Rus--Civilization--Encyclopedias.
Russia--Civilization--Encyclopedias.
Slavs, Eastern--Civilization--Encyclopedias.