FRĄCZEK, Z. School failure among pupils in COVID-19 pandemic in perspective of chosen empirical research. KULTURA – PRZEMIANY – EDUKACJA, [S. l.], v. 8, p. 76–90, 2020. DOI: 10.15584/kpe.2020.8.6. Disponível em: https://journals.ur.edu.pl/kpe/article/view/5450. Acesso em: 18 may. 2024.