Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Justus von Liebig. Line engraving by A. Weger. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Justus von Liebig. Line engraving by A. Weger. Wellcome Collection. Source: Wellcome Collection.