Columbia subject headings:
Harvard subject headings:
Black Sea Lowland (Ukraine)--Antiquities.
Darius I, King of Persia, 548 B.C.-485 B.C.
Iran--History--To 640.
Iran--Territorial expansion.
Scythians--History.
Ukraine--Antiquities.
Princeton subject headings:
Darius I, King of Persia, 548 B.C.-485 B.C.
Iran--History--To 640.
Scythians--History.