Professor Koch on the bacteriological diagnosis of cholera ; Water-filtration and cholera ; and, The cholera in Germany during the winter of 1892-93 / translated by George Duncan.

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Professor Koch on the bacteriological diagnosis of cholera ; Water-filtration and cholera ; and, The cholera in Germany during the winter of 1892-93 / translated by George Duncan. Public Domain Mark. Source: Wellcome Collection.