KOWALSKI, M. Piotr Eberhardt (1935–2020). Studia Geohistorica, [S. l.], n. 8, p. 269–270, 2020. DOI: 10.12775/32080. Disponível em: https://apcz.umk.pl/AZMDDP/article/view/32080. Acesso em: 19 sty. 2022.