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This digitised material is free to access, but contains information or visuals that may:
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Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
Credit: Correspondents: S. Source: Wellcome Collection.
Provider: The original material is held at UCL Special Collections. This catalogue is held by the Wellcome Library as part of Codebreakers: Makers of Modern Genetics.
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