DEVELOPMENTAL LEVEL OF THINKING OPERATIONS AT CHILDREN WITH SPEECH IMPAIRMENTS. Journal of Special Education and Rehabilitation, [S. l.], v. 9, n. 3-4, p. 39–50, 2008. DOI: 10.2478/. Disponível em: https://journals.ukim.mk/index.php/jser/article/view/5243. Acesso em: 20 aug. 2026.