Emil Du Bois-Reymond / von Heinrich Boruttau.
- Boruttau, Heinrich (Heinrich Johannes), 1869-1923.
- Date:
- 1922
Licence: In copyright
Credit: Emil Du Bois-Reymond / von Heinrich Boruttau. Source: Wellcome Collection.
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Licence: In copyright
Credit: Emil Du Bois-Reymond / von Heinrich Boruttau. Source: Wellcome Collection.