Plate 20, D.R. Hay, A nomenclature of colours
Licence: Public Domain Mark
Credit: Plate 20, D.R. Hay, A nomenclature of colours. Wellcome Collection. Source: Wellcome Collection.
Licence: Public Domain Mark
Credit: Plate 20, D.R. Hay, A nomenclature of colours. Wellcome Collection. Source: Wellcome Collection.