1. The demography of blindness throughout the world;Goldstein,1980
2. Malnutrition and the eye;McLaren,1963
3. Xerophthalmia: determinants and control;Sommer,1978
4. A. Sommer, Nutritional blindness: Xerophthalmia and keratomalacia, Oxford University Press, New York ((in press)).
5. Field guide to the detection and control of xerophthalmia;Sommer,1978