Hermann Ludwig Ferdinand von Helmholtz. Stipple engraving by C. H. Jeens, 1871.

    Date:
    1871
    Reference:
    4125i
    Catalogue details

    Licence: Public Domain Mark

    Credit: Hermann Ludwig Ferdinand von Helmholtz. Stipple engraving by C. H. Jeens, 1871. Wellcome Collection. Source: Wellcome Collection.

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