Columbia subject headings:
Harvard subject headings:
Darius I, King of Persia, 548 B.C.-485 B.C.--Fiction.
Egypt--History--30 B.C.-640 A.D.--Fiction.
Hadrian, Emperor of Rome, 76-138--Fiction.
Scythia--History--Fiction.
Scythians--History--Fiction.
Princeton subject headings:
Fiction.