Signed portrait of L. B. Mendel.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Signed portrait of L. B. Mendel. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Signed portrait of L. B. Mendel. Wellcome Collection. Source: Wellcome Collection.