Columbia subject headings:
Europe--Relations--Kievan Rus.
Kievan Rus--Kings and rulers.
Kievan Rus--Relations--Europe.
Nobility--Kievan Rus.
Harvard subject headings:
Europe--Relations--Kievan Rus.
Kievan Rus--Kings and rulers
Kievan Rus--Relations--Europe.
Nobility--Kievan Rus.
Princeton subject headings:
Europe--Relations--Kievan Rus.
Kievan Rus--Kings and rulers--History.
Kievan Rus--Relations--Europe.
Nobility--Kievan Rus.