An introduction to the study of colour vision (1915)
Parsons, John Herbert, Sir, 1868-1957 · Cambridge University Press · leaf 306
Fig. 75. Diagram representing the two retinae and the cortical centres connected with them. The upper four circles represent the cortical levels of the red, green, blue, and white systems connected with the left retina, the lower four those connected with the right retina. The broken line bisecting…
Color vision
Internet Archive · Gerstein - University of Toronto · Public domain (published before 1931). Free to use for anything.
