Kostyra A. Kariera dwutorowa: sportowiec-student i sportowiec-pracownik = Double path career: sportsman-student and sportsman-employee. J Educ Health Sport [Internet]. 2015 Jun. 27 [cited 2024 Jul. 18];5(7):11-25. Available from: https://apcz.umk.pl/JEHS/article/view/2766