Columbia subject headings:
Saint Petersburg (Russia)--Civilization--Greek influences--Congresses.
Saint Petersburg (Russia)--History.
Harvard subject headings:
Saint Petersburg (Russia)--Civilization--Greek influences--Congresses.
Princeton subject headings:
Greece--Relations--Russia (Federation)--Saint Petersburg--Congresses.
Saint Petersburg (Russia)--Civilization--Greek influences--Congresses.
Saint Petersburg (Russia)--Relations--Greece--Congresses.