1. Blagojevic, M.: Report on Trachoma Pilot Project India W. H. O. No. India 101. SEA/Trach/8, p. 22, 1959.
2. The causes of blindness in the Netherlands;Schappert-Kimmijser;J. Optical Soc. Am.,1959
3. The nomenclature and classification of the causes of blindness;Berens;Acta Concilium Ophth. (Britannia),1950
4. Directorate General of Health Services, Ministry of Health, Government of India: National Trachoma Control Program, 1964.
5. The blinding effects of trachoma can be and are being defeated;Rambo;Oriental Arch. Ophth.,1966