Dental anaesthesia : painless tooth extraction by congelation / J. Richard Quinn.

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Dental anaesthesia : painless tooth extraction by congelation / J. Richard Quinn. Public Domain Mark. Source: Wellcome Collection.

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This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.