Łukasik IM. Student Well-Being in the Context of Erik Allardt’s Theory of Welfare and Urie Bronfenbrenner’s Ecological Systems Theory of Development. PBE [Internet]. 2021 Dec. 16 [cited 2024 Jul. 19];2(35):197-212. Available from: https://apcz.umk.pl/PBE/article/view/31899