“Neue Briefe Christian Gottfried Ehrenbergs an Alexander Von Humboldt”. HiN - Alexander von Humboldt in the Net. International Review for Humboldt Studies 15, no. 29 (August 14, 2014): 70–78. Accessed March 28, 2026. https://www.hin-online.de/index.php/hin/article/view/199.