An electrocardiograph at the National Hospital for Diseases of the Heart, London: one man adjusts the dials while another looks on. Photograph, ca. 1922.
- Date:
- 1922
- Reference:
- 565746i
Licence: In copyright
Credit: An electrocardiograph at the National Hospital for Diseases of the Heart, London: one man adjusts the dials while another looks on. Photograph, ca. 1922. Wellcome Collection. Source: Wellcome Collection.
