Causes of visual impairment in children
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B. A. E. Pol
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Article
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1986
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Springer-Verlag
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English
โ 247 KB
The populations formed by the pupils of the eleven Dutch institutions for visually handicapped children on the first of January 1980 were investigated, repeating the investigation of the International Association for Prevention of Blindness in 1970. The total number of pupils was nearly the same in