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Credit
Diphtheria : its natural history and prevention, being the Milroy lectures delivered before the Royal College of Physicians of London, 1891 / by R. Thorne Thorne. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.