MALDONADO PINTO, J. E. Towards a sustainable eco-tourism policy for the department of Norte de Santander, Colombia. Opinión Pública, [S. l.], n. 15, p. 21-29, 2021. DOI: 10.52143/2711-0281.801. Disponível em: https://revistas.cun.edu.co/index.php/opinionpublica/article/view/801. Acesso em: 18 may. 2024.