V. Tretyakov N, A. Fedorov V, V. Ketrish E, M. Permyakov O. Maintenance of Russian secondary school students’ health (organizational and administrative aspect). IJET [Internet]. 2018 Apr. 15 [cited 2024 Apr. 28];7(2.13):13-7. Available from: https://sciencepubco.com/index.php/ijet/article/view/11571