TY - BOOK AU - GIBB, Charles TI - The most common cause of learning difficulties : a profile of fragile-X syndrome and its implications for education KW - DESORDENES MENTALES KW - EDUCACION ESPECIAL KW - HABILIDAD COGNITIVA KW - PROBLEMAS DE APRENDIZAJE KW - SINDROME DE DOWN N1 - Abril 1993 ER -