Kekule, Ueber die Constitution und die Metapmorphosen...
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Kekule, Ueber die Constitution und die Metapmorphosen... Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Kekule, Ueber die Constitution und die Metapmorphosen... Wellcome Collection. Source: Wellcome Collection.