Rushton, William Albert Hugh. Visual pigments in man. - Springfield, IL : C.C. Thomas, [1962] - The Sherrington lectures ; 6 . Bibliography: p. 37-38. LCCN: 62052949 Subjects--Topical Terms: Color vision.Pigments. LC Class. No.: QP481 / .R8 Dewey Class. No.: 152.1