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9 avr. 1954 - Piaget estudia la resolución de problemas con sus hijos.
Ajouté au bande de temps:
Historia de la psicología. siglo xx
By
dianap20m@live.com
26 nov. 2018
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0
565
Date:
9 avr. 1954
Maintenaint
~ Il y a 71 ans
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