KRAKKER, Anna. Investigation of the effect of an environmental education package at school age. Journal of Applied Technical and Educational Sciences, [S. l.], v. 10, n. 3, p. 45–59, 2020. DOI: 10.24368/jates.v10i3.198. Disponível em: https://jates.org/index.php/jatespath/article/view/198. Acesso em: 3 apr. 2025.