Kraft A. Animal Oil, Wound Balm, Prussian Blue, the Fire and Light Principium and the Philosophers’ Stone Made from Phosphorus: on the 350th Birthday of the Chymist Johann Conrad Dippel (1673-1734). Substantia [Internet]. 2023 May 30 [cited 2024 May 12];7(2):137-59. Available from: https://riviste.fupress.net/index.php/subs/article/view/2107