Roczniak K, Babuśka–Roczniak M, Wojtanowska–Kaczka M, Racz O, Roczniak A, Lyubinets O, et al. Morphological and motor skills condition among 10-11 year old children engaged in cross-country skiing attending Sports Primary School in Suprasl. J Educ Health Sport [Internet]. 2020 Jun. 8 [cited 2025 Feb. 3];10(6):68-81. Available from: https://apcz.umk.pl/JEHS/article/view/JEHS.2020.10.06.007