H. Ranke "Cholera-infections...", 1874: front cover
Licence: Public Domain Mark
Credit: H. Ranke "Cholera-infections...", 1874: front cover. Wellcome Collection. Source: Wellcome Collection.
Licence: Public Domain Mark
Credit: H. Ranke "Cholera-infections...", 1874: front cover. Wellcome Collection. Source: Wellcome Collection.