Gherab, Akrem, and Khalil Merad. “The Engineering Standards for Playgrounds in Secondary Schools and Their Role in Achieving the Educational Goals of Physical Education and Sports Classes in Oum El-Bouaghi”. Journal of Architecture and environment of child 8, no. 2 (August 28, 2023): 15–30. Accessed July 12, 2025. https://journals.univ-batna.dz/index.php/leve/article/view/4050.