Licence: Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Credit: The idea of IQ / Russell Marks. Source: Wellcome Collection.
313/324 (page 301)
Licence: Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Credit: The idea of IQ / Russell Marks. Source: Wellcome Collection.