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1 Jan 1921 Jahr - Trabaja sobre nociones operatorias Contribuyó a convertir la Psicología Infantil en Investigación Experimental.

Zugefügt zum Band der Zeit:

Jean Piaget

ByEmma Muñoz
14 Okt 2018

Datum:

1 Jan 1921 Jahr
Jetzt
~ 103 years ago
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