Arias de Greiff J. El diario inédito de Humboldt. XIII (51): 393-398, 1969. Rev. Acad. Colomb. Cienc. Ex. Fis. Nat. [Internet]. 2019 Sep. 25 [cited 2025 May 9];43(168):456-69. Available from: https://raccefyn.co/index.php/raccefyn/article/view/1009