[Worries about the school child (author's transl)].

[Worries about the school child (author's transl)]. — المؤلف: Meinhardt, J — Das Offentliche Gesundheitswesen Apr 1976

المؤلف
Meinhardt, J
النشر
Das Offentliche Gesundheitswesen Apr 1976
الوصف
262-73 p.
الموضوعات
Adolescent؛ Attention؛ Child؛ Efficiency؛ Humans؛ Learning؛ Mental Fatigue؛ Psychology, Child