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The survey of Childhood deafness carried out during 1977 in the nine countries of the European Economic Community (EEC) provided data on the age at which diagnosis is achieved, the patterns of hearing aid provision, the types of school environment, speech and reading abilities, and the use of manual communication.Une étude de la surdité infantile au cours de l'année 1977, dans les neuf pays de la Communauté Européenne, nous a fourni des informations concernant: l'aˇge où le diagnostic peut ětre effectué, les types de prothèses auditives utilisées, les types de scolarisation, les niveaux de la lecture et du langage parlé, enfin l'utilisation du langage gestuel.
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John Antony Michael Martin (1982) studied this question.
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