. 1959 Apr;45(4):636–644. doi: 10.1073/pnas.45.4.636
COLOR VISION AND THE NATURAL IMAGE PART II*
1POLAROID CORPORATION, CAMBRIDGE, MASSACHUSETTS
*
Part I appeared in the January, 1959, issue of these Proceedings and is a necessary introduction to Part II.
PMCID: PMC222609 PMID: 16590426