Columbia subject headings:
Ostanes.
Vīshtāspa.
Zoroaster.
Harvard subject headings:
Greece--Civilization--To 146 B.C.
Hystaspes, King.
Iran--Religion.
Ostanes.
Osthanes.
Vīshtāspa.
Zoroaster.
Princeton subject headings:
Ostanes.
Vīshtāspa.
Zoroaster.