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Credit
Medical statistics : consisting of estimates relating to the population of Philadelphia, with its changes as influenced by the deaths and births, during ten years, viz. from 1821 to 1830, inclusive / by Gouverneur Emerson. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.