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31 dic 1923 anni - En Europa con excepción de Inglaterra, los conocimientos psicológicos relativos al proceso de envejecimiento en este período proceden de psiquiatras e investigaciones aisladas en Alemania.

Aggiunto al nastro di tempo:

Genesis Rojas

ByGenesis Rojas
4 ott 2018

Data:

31 dic 1923 anni
Adesso
~ 100 years ago
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