1. Epidemiology and public health aspects of hypovitaminosis A;Oomen;Trop Geogr Med,1964
2. Vitamin A deficiency and xerophthalmia;WHO Technical Report Series, No. 590,1976
3. International symposium on the metabolic function of vitamin A,1969
4. On the biological role and metabolism of vitamin A;Rietz;Acta Vitaminol Enzmol,1971
5. Interactions of Nutrition and Infection;Scrimshaw;WHO Monograph Series, No. 57,1968