STOTTMEISTER, Ulrich Karl Bernd. Umweltgedanken zu Alexander zu Humboldt. HiN - Alexander von Humboldt in the Net. International Review for Humboldt Studies, [S. l.], v. 18, n. 35, p. 75–94, 2017. DOI: 10.18443/258. Disponível em: https://www.hin-online.de/index.php/hin/article/view/258. Acesso em: 12 may. 2026.