Observations on the history, use, and construction of obturateurs : or, what have hitherto been called in this country, artificial palates, with cases, illustrative of recent improvements / by James Snell.

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Observations on the history, use, and construction of obturateurs : or, what have hitherto been called in this country, artificial palates, with cases, illustrative of recent improvements / by James Snell. Public Domain Mark. Source: Wellcome Collection.