Columbia subject headings:
Kievan Rus--History--862-1237--Historiography.
Kievan Rus--History--862-1237--Sources.
Harvard subject headings:
History--Research--Soviet Union.
Kievan Rus--History.
Russia--History--To 1533--Sources.
Russia--History--To 1533.
Ukraine--History--To 1648--Historiography.
Ukraine--History--To 1648--Sources.
Princeton subject headings:
Kievan Rus--History--862-1237--Historiography.
Kievan Rus--History--862-1237--Sources.