The Electrical Vacuum Tube: W.D. Ross demonstrates its medical use with a woman patient. Photograph, ca. 1922.
- Date:
- 1922
- Reference:
- 565752i
Licence: In copyright
Credit: The Electrical Vacuum Tube: W.D. Ross demonstrates its medical use with a woman patient. Photograph, ca. 1922. Wellcome Collection. Source: Wellcome Collection.
