PROBLEMS OF HEALTH-PRESERVING EDUCATION IN MODERN SCHOOLS. EDUCATION IN THE 21ST CENTURY, [S. l.], v. 2, n. 2, p. 70–75, 2023. DOI: 10.46991/educ-21st-century.v2.i2.070. Disponível em: https://journals.ysu.am/Educ-21st-Century/article/view/10890. Acesso em: 11 mar. 2026.