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31 déc. 1905 - Research on genetic cause of feeble mindedness started
Description:
In 1906 Goddard began his research on the genetic causes of feeble mindedness
Ajouté au bande de temps:
History Timeline for the Disabled
By
Aidan Kuhn
13 déc. 2017
0
0
573
Date:
31 déc. 1905
Maintenaint
~ Il y a 119 ans
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