[Hygienic problems connected with education in relays of children in the 1st grade of elementary schools].

Name: [Hygienic problems connected with education in relays of children in the 1st grade of elementary schools].
Author: Zdunkiewicz, L

[Hygienic problems connected with education in relays of children in the 1st grade of elementary schools]. — المؤلف: Zdunkiewicz, L — Roczniki Panstwowego Zakladu Higieny 1976

المؤلف: Zdunkiewicz, L
النشر: Roczniki Panstwowego Zakladu Higieny 1976
الوصف: 345-52 p.
الموضوعات: Child؛ Female؛ Humans؛ Learning؛ Learning Disabilities؛ Male؛ Mental Fatigue؛ Poland