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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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5 ene 1970 año - Su teoría es aceptada en Estados Unidos.
Añadido al timeline:
Jean Piaget
By
Emma Muñoz
14 oct 2018
0
0
516
fecha:
5 ene 1970 año
Ahora mismo
~ 55 years ago
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