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Credit
Bericht uber die Thatigkeit der von dem Herrn Minister der geistlichen, Unterrichts-und Medizinal-Angelegenheiten eingesetzten Kommission zur Prufung der Impfstofffrage / P. Frosch. 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.