Columbia subject headings:
Germany--Relations--Kievan Rus--History--Sources.
Kievan Rus--History--862-1237--Sources.
Kievan Rus--Relations--Germany--History--Sources.
Russia--History--To 1533--Sources.
Harvard subject headings:
Europe, Eastern--History--Sources.
Germany--Relations--Kievan Rus--Sources.
Kievan Rus--History--862-1237--Sources.
Kievan Rus--History--To 862--Sources.
Kievan Rus--Relations--Germany--Sources.
Slavs--History--Sources.
Princeton subject headings:
Europe, Eastern--History--Sources.
Germany--Relations--Kievan Rus--Sources.
Kievan Rus--History--862-1237--Sources.
Kievan Rus--History--To 862--Sources.
Kievan Rus--Relations--Germany--Sources.
Slavs--History--Sources.