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31 dez 1905 ano - Research on genetic cause of feeble mindedness started

Descrição:

In 1906 Goddard began his research on the genetic causes of feeble mindedness

Adicionado na linha do tempo:

History Timeline for the Disabled

13 dez 2017

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573

Data:

31 dez 1905 ano

Agora

~ 119 years ago

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