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2
-
Psychologie et épistémologie / Jean Piaget.
- 121 P579p
- Piaget, Jean, 1896-1980.
- Gonthier,
- c1970.
- Paris :
-
Structuralism / Jean Piaget ; translated and edited by Chaninah Maschler.
- 149.96 P579s
- Piaget, Jean, 1896-1980.
- Harper & Row,
- c1970.
- New York :