Columbia subject headings:
Byzantine Empire--History, Naval.
Byzantine Empire--History.
Mediterranean Region--History, Naval.
Naval art and science--History.
Harvard subject headings:
Byzantine Empire--History, Naval
Byzantine Empire--History.
Mediterranean Region--History, Naval.
Naval art and science--History
Princeton subject headings:
Byzantine Empire--History, Naval.
Byzantine Empire--History.
Mediterranean Region--History, Naval.
Naval art and science--History.