[Reflection of the development of the secondary signal system in a spectral picture of children's speech].
D002675:Child, Preschool; D006801:Humans; D007804:Language Development; D010700:Phonetics; D013060:Speech
Otrazhenie ravitiia votoroĭ signal'noĭ sistemy v spektral'noĭ kartine detskoĭ rechi.