CCognitive developmentCognitive developmentde Peter J. ValletuttiMateriasChildren with disabilitiesCognition in childrenEducationStudy and teachingThought and thinkingEdiciones (1)Cognitive development (1992)Singular Pub. Corp. · inglésMás obras de Peter J. ValletuttiPreventing physical and mental disabilitiesMedical problems in the classroomMedical problems in the classroom