Speech, hearing, and language services and professional training in the USSR and Poland.
D000328:Adult; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007806:Language Disorders / Q000628:therapy*; D011044:Poland; D013064:Speech Disorders / Q000628:therapy*; D013070:Speech Therapy / Q000193:education*; D014586:USSR