Columbia subject headings:
India--History--To 324 B.C.
Indo-Aryans--History.
Indus civilization.
Harvard subject headings:
India--Civilization
India--History--To 324 B.C.
Indo-Aryans--History.
Indus civilization
Princeton subject headings:
Hindu civilization.
India--Civilization--To 1200.
Indo-Aryans--History.