CICHOŃ, M. Valuation of lake ecosystems of Central Pomerania by young people using the contingent valuation method . Economics and Environment, [S. l.], v. 70, n. 3, p. 10, 2019. Disponível em: https://www.ekonomiaisrodowisko.pl/journal/article/view/75. Acesso em: 1 may. 2024.