1. Life's Color Code, McGraw-Hill, New York, 1973.
2. The Vertebrate Eye and its Adaptive Radiation, Hafner, New York. 1963.
3. “The Adaptation of Visual Pigments to Their Photic Environment,” in Ed., Handbook of Sensory Physiology, vol. VII/I, Springer, New York, 1972.
4. “Visual Pigments and the Environment,” in Ed., Vision in Fishes, Plenum, New York 1975, pp. 565–578.
5. Lunar periodicity of colour sense of fish