1. The Causes of Blindness in Childhood: a Study of 776 Children with Severe Visual Handicaps;AWDRY, P.N.; COBB, B.; ADAMS, P.C.G.;Publ. Hlth Rev,1967
2. Malawi med;MERIN, S.;Bull,1967
3. , LAPITHIS, A. G., HOROWITZ, D., and MICHAELSON, I. C. (1972) Amer.
4. Causes and Prevention of Blindness;Ophthal,1972
5. Amer;OLURIN, O.;J. Ophthal,1970