1. Guide to trachoma control;Dawson, C.R.; Jones, B.R.; Tarrizo, M.L.,1981
2. Blinding and non-blinding trachoma: assessment of intensity of upper tarsal inflammatory disease and disabling lesions;Dawson, C.R.; Jones, B.R.; Darouger, S.;Bull WHO,1975
3. Guidelines for programmes for the prevention of blindness;World Health Organisation,1979
4. Visual acuity as related to causes of blindness, age and sex in urban and rural areas of Egypt;Said, M.E.; Goldstein, H.; Korra, A.; El-Kashlan, K.;Am J Public Health,1971
5. Prevalence of trachoma in school children and ophthalmological outpatients in rural Egypt;Barsoum, I.S.; Mostafa, M.S.E.; Shihab, A.A.; El-Alamy, M.; Habib, M.A.; Colley, D.G.;Am J Trop Med Hyg,1987