Espagne, Michel. “Alexander Von Humboldt. L’introduction Au Cosmos. Prodromes De La pensée échologique”. HiN - Alexander von Humboldt in the Net. International Review for Humboldt Studies 27, no. 51 (June 19, 2026): 69–76. Accessed June 19, 2026. https://hin-online.de/index.php/hin/article/view/406.