Observations medical and political: on the small-pox and inoculation; and on the decrease of mankind at every age, with a comparative view of the diseases most fatal to London during ninety years. Including an attempt to demonstrate in what manner London may save near two thousand ... lives annually ... / [William Black].

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Observations medical and political: on the small-pox and inoculation; and on the decrease of mankind at every age, with a comparative view of the diseases most fatal to London during ninety years. Including an attempt to demonstrate in what manner London may save near two thousand ... lives annually ... / [William Black]. Public Domain Mark. Source: Wellcome Collection.