[Changes in working disposition in the course of the week in children of the 7th grade of an elementary school].

[Changes in working disposition in the course of the week in children of the 7th grade of an elementary school]. — المؤلف: Zdunkiewicz, L — Roczniki Panstwowego Zakladu Higieny 1977

المؤلف
Zdunkiewicz, L
النشر
Roczniki Panstwowego Zakladu Higieny 1977
الوصف
515-21 p.
الموضوعات
Age Factors؛ Child؛ Efficiency؛ Female؛ Humans؛ Male؛ Mental Fatigue؛ Students