title: [Audiometry of normal and mental retarded children with frequency modulated sounds].
mesh_terms: D000293:Adolescent; D001299:Audiometry; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000503:physiopathology*; D008297:Male; D013016:Sound