International tourism , growth and environmental quality : the case of three North African countries. European journal of volunteering and community-based projects, [S. l.], v. 1, n. 1, p. 22–36, 2021. Disponível em: https://journal.odvcasarcobaleno.it/index.php/ejvcbp/article/view/31. Acesso em: 3 apr. 2025.