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  1. Mental defect, mal-nutrition, and the teacher's appreciation of intelligence; a reply to criticisms of the memoir on 'The influence of defective physique and unfavourable home environment on the intelligence of school children, ' by David Heron.
    By: Heron, David.
    Publication info: London,Dulau & Co.,1911.
    Contributed by: Wellesley College Library (archive.org)
    Subjects: Children with disabilities  Heredity
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