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2. The Incidence and Causes of Blindness in England and Wales, 1948–1962;Sorsby,1966
3. The Causes of Blindness in Childhood;Fraser,1967
4. Causes of severe visual handicap among school children in southern Australia;Fraser;Med. J. Aust.,1968
5. Les causes de la cécité a l'entrée d'une institution de jeunes aveugles;Bailliart;Ann. Oculistique,1953