Columbia subject headings:
Armenia--History--428-640.
Avarayr, Battle of, Iran, 451.
Vardan Mamikonian, Saint, -451.
Harvard subject headings:
Armenia--History--428-640.
Avarayr, Battle of, Iran, 451.
Vardan Mamikonian, Saint, -451
Princeton subject headings:
Armenia (Republic)--History--Persian and Greek rule--429-640.
Vardan Mamikonian, Saint, -451.