FRĄK, M.; JANKIEWICZ, U. Can waters from woodland areas be of poor quality? The problem of sanitary contamination of Białowieża Primeval Forest watercourses. Ecological Questions, [S. l.], v. 28, p. 9–14, 2018. DOI: 10.12775/EQ.2017.033. Disponível em: https://apcz.umk.pl/EQ/article/view/EQ.2017.033. Acesso em: 19 jul. 2024.