Columbia subject headings:
Byzantine Empire--Civilization--Roman influences--Congresses.
Holy Roman Empire--Congresses.
Roman law--History.
Roman law--Influence.
Rome--Civilization--Congresses.
Rome--Civilization--Influence--Congresses.
Soviet Union--Civilization--Roman influences--Congresses.
Harvard subject headings:
Istanbul (Turkey)--History--Roman influences.
Moscow (Russia)--History--Roman influences.
Roman law--Influence.
Rome--History
Princeton subject headings: