Nookum P. Construction of Physical Fitness Norm’s for 7 - 9 Years old Student of Vientiane Lao People’s Democratic Republic. J.TNSU [internet]. 2022 Mar. 2 [cited 2026 Sep. 18];7(2):63-76. available from: https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/256455