Julius Robert von Mayer. Wood engraving by Hummel, 18--.

    • Hummel, wood-engraver.
    Date:
    [between 1800 and 1899]
    Reference:
    658046i
    Catalogue details

    Licence: Public Domain Mark

    Credit: Julius Robert von Mayer. Wood engraving by Hummel, 18--. Wellcome Collection. Source: Wellcome Collection.

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