YAHYOYEVNA, M. Z. (2024) “OLIGOPHRENIA - CLINICAL SIGNS OF MENTAL RETARDATION”., American Journal of Language, Literacy and Learning in STEM Education (2993-2769), 2(2), pp. 480–483. Available at: http://grnjournal.us/index.php/STEM/article/view/3387 (Accessed: 23 December 2024).