The value of Douglas's medium for the production of diphtheria toxin / by Percival Hartley.
- Hartley, Percival Horton-Smith, Sir, 1867-
- Date:
- [1922?]
Licence: In copyright
Credit: The value of Douglas's medium for the production of diphtheria toxin / by Percival Hartley. Source: Wellcome Collection.
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