On the oral education of the deaf and dumb : a paper read at the teachers' conference, Jan. 10th, 1878 / by William van Praagh.

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On the oral education of the deaf and dumb : a paper read at the teachers' conference, Jan. 10th, 1878 / by William van Praagh. Public Domain Mark. Source: Wellcome Collection.

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This material has been provided by King’s College London. The original may be consulted at King’s College London.