Columbia subject headings:
Cities and towns, Ancient--Soviet Union--Congresses.
Cities and towns, Medieval--Soviet Union--Congresses.
Harvard subject headings:
Cities and towns--Kievan Rus--History--Congresses.
Kievan Rus--History--862-1237--Congresses.
Kyïv (Ukraine)--Antiquities--Congresses.
Russia (Federation)--Antiquities.
Russia--Antiquities.
Princeton subject headings:
Cities and towns, Ancient--Soviet Union--Congresses.
Cities and towns, Medieval--Soviet Union--Congresses.