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

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

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

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