Columbia subject headings:
Harvard subject headings:
Byzantine Empire--History--Justinian I, 527-565.
Constantine I, Emperor of Rome, -337
Istanbul (Turkey)--History.
Justinian I, Emperor of the East, 483?-565
Rome--History--Constantine I, the Great, 306-337.
Princeton subject headings:
Byzantine Empire--History--Justinian I, 527-565.
Constantine I, Emperor of Rome, -337.
Istanbul (Turkey)--History.
Justinian I, Emperor of the East, 483?-565.
Rome--History--Constantine I, the Great, 306-337.