John Snow's certificate for M.B. University of London, 1843
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: John Snow's certificate for M.B. University of London, 1843. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: John Snow's certificate for M.B. University of London, 1843. Wellcome Collection. Source: Wellcome Collection.