Phonologic-articulatory disordersde Perkins, William H.MateriasArticulation disordersSpeech disordersTreatmentSpeech therapyTherapyLanguage DisordersEdiciones (1)Phonologic-articulatory disorders (1983)Thieme-Stratton · inglésMás obras de Perkins, William H.Jacobite minstrelsy...Nature and treatment of stutteringLanguage handicaps in children