Some comments and discussion on the paper "The etiology of tumors", read before the Pathological Society of Philadelphia, April 28, 1881 / by H.F. Formad.

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Some comments and discussion on the paper "The etiology of tumors", read before the Pathological Society of Philadelphia, April 28, 1881 / by H.F. Formad. Public Domain Mark. Source: Wellcome Collection.