Columbia subject headings:
Byzantine Empire--Civilization--Congresses.
Rome--Civilization--Congresses.
Russia--Civilization--Byzantine influences--Congresses.
Russia--Civilization--Foreign influences--Congresses.
Russia--Civilization--Roman influences--Congresses.
Russia--Politics and government--1533-1613--Congresses.
Russia--Politics and government--1613-1689--Congresses.
Russia--Politics and government--To 1533--Congresses.
Harvard subject headings:
Byzantine Empire--Civilization--Roman influences--Congresses.
Classicism--Russia--Congresses.
Rome--Civilization--Congresses.
Russia--Civilization--Foreign influences--Congresses.
Princeton subject headings:
Byzantine Empire--Civilization--Congresses.
Classicism--Russia--Congresses.
Rome--Civilization--Congresses.
Russia--Civilization--Classical influences--Congresses.