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Credit
Professor Koch on the bacteriological diagnosis of cholera, water-filtration and cholera, and the cholera in Germany during the winter of 1892-93 / tr. by George Duncan ; with prefatory note by W.T. Gairdner. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.