Observations on impediments of speech : with some remarks on their successful treatment. In a letter addressed to T.J. Pettigrew ... / by Richard Cull.

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Observations on impediments of speech : with some remarks on their successful treatment. In a letter addressed to T.J. Pettigrew ... / by Richard Cull. Public Domain Mark. Source: Wellcome Collection.

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This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.