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Credit
Observations on variolous inoculation, and vaccination ; in a letter to a friend. With an appendix, containing some remarks on the extension of small-pox, in the town of Melksham and its vicinity / by J.F. Hulbert. 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.