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Credit
Die Bekämpfung der Infectionskrankheiten : Hygienischer Theil / von Oberingenieur Brix, Professor Dr. Pfuhl und Hafenarzt Dr. Nocht ; herausgegeben von Stabsarzt Professor Dr. Behring. Public Domain Mark. Source: Wellcome Collection.
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This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.