Determination of the ecologically effective channel depth for the purpose of extraction of nonmetallic building materials in lowland rivers. Geography and Tourism, [S. l.], v. 1, n. 6, p. 87–93, 2018. Disponível em: https://czasopisma.ukw.edu.pl/index.php/gat/article/view/95.. Acesso em: 4 dec. 2024.