[Changes in working disposition of pupils in the 1st grade of elementary school during the school year].

Name: [Changes in working disposition of pupils in the 1st grade of elementary school during the school year].
Author: Polus-Szeniawska, E

[Changes in working disposition of pupils in the 1st grade of elementary school during the school year]. — المؤلف: Polus-Szeniawska, E — Roczniki Panstwowego Zakladu Higieny 1977

المؤلف: Polus-Szeniawska, E
النشر: Roczniki Panstwowego Zakladu Higieny 1977
الوصف: 507-13 p.
الموضوعات: Adolescent؛ Age Factors؛ Child؛ Efficiency؛ Female؛ Humans؛ Male؛ Mental Fatigue