Image Colnect-154-024-Helmholtz-physicist-Eye-and-Colour-Triangle.jpg
(685 x 409 pixels) |
Type: stamp Issuer: Germany Date: 1994 Denom: ?
Visibility: public Image owner: none postage 9/8/1994 100(pf) multi issue=Hermann von Helmholtz death 100th d=Hermann von Helmholtz & diagram of eye unwmk Crops No visible images cropped from this one. Measurements Resolution is unknown. Source Source name: Colnect File URL: http://i.colnect.net/b/154/024/Helmholtz-physicist-Eye-and-Colour-Triangle.jpg Uploaded September 2, 2014, 2:48 pm by Stan Shebs |
