Dear sir, we have the honour to inform you that we are the sole agents for the anti-diphtheric serium (Roux-Behring system) prepared by Doctor Villejean ...
- Date:
- [between 1890 and 1899?]
Licence: Public Domain Mark
Credit: Dear sir, we have the honour to inform you that we are the sole agents for the anti-diphtheric serium (Roux-Behring system) prepared by Doctor Villejean ... Source: Wellcome Collection.
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