An address delivered before the Medical Society of the State of Pennsylvania at its annual session : held in West Chester, in May 1857 / by R. La Roche.

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An address delivered before the Medical Society of the State of Pennsylvania at its annual session : held in West Chester, in May 1857 / by R. La Roche. Public Domain Mark. Source: Wellcome Collection.

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This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)