A decade of early intervention programs: what we have learned.
D002656:Child Day Care Centers; D002669:Child Welfare / Q000266:history*; D002675:Child, Preschool; D003467:Cultural Deprivation; D004493:Education; D005069:Evaluation Studies as Topic; D006801:Humans; D007361:Intelligence Tests; D014481:United States; D014490:United States Office of Economic Opportunity