Columbia subject headings:
Indo-Aryans--History.
Indo-Aryans--Origin.
Russians--History.
Russians--Origin.
Harvard subject headings:
Indo-Aryans--History.
Indo-Aryans--Origin.
Russians--History.
Russians--Origin.
Princeton subject headings:
Indo-Aryans--History.
Indo-Aryans--Origin.
Russians--History.
Russians--Origin.