A treatise on the cow-pox; containing an enumeration of the principal facts in the history of that disease, the method of communicating the infection by inoculation; and the means of distinguishing between the genuine and spurious cow-pox ... / by George Bell.

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A treatise on the cow-pox; containing an enumeration of the principal facts in the history of that disease, the method of communicating the infection by inoculation; and the means of distinguishing between the genuine and spurious cow-pox ... / by George Bell. Public Domain Mark. Source: Wellcome Collection.