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Credit
Dr. Parson's report to the local government board on the prevalence of typhoid fever in the borough of Haverfordwest, and on the general sanitary condition of the borough. Public Domain Mark. Source: Wellcome Collection.
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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.