A. Neisser "Zur Aetiologie", 1879
Licence: Public Domain Mark
Credit: A. Neisser "Zur Aetiologie", 1879. Wellcome Collection. Source: Wellcome Collection.
Licence: Public Domain Mark
Credit: A. Neisser "Zur Aetiologie", 1879. Wellcome Collection. Source: Wellcome Collection.