Victor Mouth Lamp for use upon the commercial current. Fig 155, page 353, 'Dental Electricity' by Levitt E Custer, 1901.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Victor Mouth Lamp for use upon the commercial current. Fig 155, page 353, 'Dental Electricity' by Levitt E Custer, 1901. Wellcome Collection. Source: Wellcome Collection.
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