AID TO THE BLIND.
D001766:Blindness; D006801:Humans; D008824:Michigan; D012943:Social Security; D012946:Social Welfare; D014481:United States; D019987:Persons with Visual Disabilities; D014829:Vocational Education; D014837:Voluntary Health Agencies
BLINDNESS; MICHIGAN; SOCIAL WELFARE; UNITED STATES; VOCATIONAL EDUCATION; VOLUNTARY HEALTH AGENCIES