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1 Jan 1968 Jahr - The Diagnostic and Statistical Manual of the American Psychiatric Association offers the first description of attention deficit hyperactivity disorder (ADHD).
Zugefügt zum Band der Zeit:
History of special education
By
emeline
12 Aug 2019
0
0
2720
Datum:
1 Jan 1968 Jahr
Jetzt
~ 57 years ago
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