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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 янв 1921 г. - Trabaja sobre nociones operatorias Contribuyó a convertir la Psicología Infantil en Investigación Experimental.
Добавлено на ленту времени:
Jean Piaget
By
Emma Muñoz
14 окт 2018
0
0
516
Дата:
1 янв 1921 г.
Сейчас
~ 104 г назад
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