PISKORZ-RYŃ, Agnieszka. The principle of sustainable development and public administration tasks regarding senior citizens from the perspective of administrative law sciences. Selected issues. Family Studies, [S. l.], v. 22, n. 1(46), p. 51–65, 2021. DOI: 10.21697/snr.2018.46.1.05. Disponível em: https://czasopisma.uksw.edu.pl/snr/article/view/8708. Acesso em: 9 nov. 2026.