Regional Differences in the Prevalence of Blindness
نویسنده
چکیده
Both for appraising State programs of aid to the blind and for planning and evaluating the results of programs for preventing blindness, information is needed concerning the prevalence of blindness in diperentparts of the Nation. Although satisfactory State estimates cannot be made now because of lack of adequate data, suficient knowledge of differences in prevalence of blindness exists to permit useful regional comparisons.
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تاریخ انتشار 2000