Columbia subject headings:
Harvard subject headings:
Russia (Federation)--Civilization--Congresses.
Russia (Federation)--Relations--Ukraine--Congresses.
Ukraine--Civilization--1917---Congresses.
Ukraine--Civilization--Russian influences--Congresses.
Ukraine--Relations--Russia (Federation)--Congresses.
Princeton subject headings:
Russia (Federation)--Relations--Ukraine--Congresses.
Russians--Ukraine--Intellectual life--Congresses.
Ukraine--Civilization--Russian influences--Congresses.
Ukraine--Relations--Russia (Federation)--Congresses.