Hrytsai N, Trokhymchuk I, Grygus I, Zukow W. Training of future biology teachers to organize excursions in school. J Educ Health Sport [Internet]. 2019 May 12 [cited 2024 Jul. 27];9(5):187-98. Available from: https://apcz.umk.pl/JEHS/article/view/6909