Alexander von Humboldt and the Beginning of the Environmental Movement . HiN – Alejandro de Humboldt en la Red. Revista internacional de estudios humboldtianos, [S. l.], v. 2, n. 02, p. 121–127, 2021. DOI: 10.18443/15. Disponível em: https://hin-online.de/index.php/hin/article/view/15. Acesso em: 28 mar. 2026.