SOYEZ, D. Industrietourismus. ERDKUNDE, [S. l.], v. 40, n. 2, p. 105–111, 1986. DOI: 10.3112/erdkunde.1986.02.03. Disponível em: https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/2094. Acesso em: 3 dec. 2024.