1. Blindness and visual impairment in southern Malawi;Chirambo, M.C.; Tielsch, J.M.; West, K.P.; Katz, J.; Tizazu, T.; Schwab, L.;Bull WHO,1986
2. World Population Data Sheet;Bureau, Population Reference; Inc,1987
3. Childhood blindness: dateline Africa;Kagame, K.; Schwab, L.;Ophthalmic Surg,1989
4. Causes of blindness among students in a blind school institution in a developing country;Chirambo, M.C.; Ben-Ezra, D.;BrJ Ophthalmol,1976
5. Causes of blindness detected in nineteen schools for the blind in Tanzania. A final report for the Ministry;Sauter, J.J.,1979