PURMER, Michiel. A landscape history of the Geul Valley: from a farmers’ Arcadia to a multifunctional landscape. TÁJÖKOLÓGIAI LAPOK, [S. l.], v. 17, n. Suppl.1, p. 33–46, 2019. DOI: 10.56617/tl.3569. Disponível em: https://journal.uni-mate.hu/index.php/tl/article/view/3569. Acesso em: 10 apr. 2025.