Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Johann Popp. Line engraving by P. Isselburg. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Johann Popp. Line engraving by P. Isselburg. Wellcome Collection. Source: Wellcome Collection.