Khanikiants O, Konestyapin V, Rymar O, Yaroshyk M, Sorokolit N. THE APPLICATION OF ATHLETICS TOOLS IN DUE TO DEVELOP SPEED OF SECONDARY SCHOOL CHILDREN. SIE [Internet]. 2021 May 28 [cited 2024 Nov. 21];2:283-91. Available from: https://journals.ru.lv/index.php/SIE/article/view/6224