Columbia subject headings:
Cognition and culture.
Indians of North America--South Dakota--Psychology.
Oglala Indians--Psychology.
Piaget, Jean, 1896-1980.
Harvard subject headings:
Cognition and culture.
Indians of North America--South Dakota--Psychology.
Oglala Indians--Psychology.
Piaget, Jean, 1896-1980.
Princeton subject headings:
Cognition and culture.
Indians of North America--South Dakota--Psychology.
Oglala Indians--Psychology.
Piaget, Jean, 1896-1980.