Nabiyeva Nodira Rustamjon qizi. THE SYSTEM OF LEVELS OF FOREIGN LANGUAGE PROFICIENCY AT THE PRESENT STAGE OF DEVELOPMENT OF METHODOLOGICAL SCIENCE. eijmr [Internet]. 2024 May 16 [cited 2026 Mar. 20];11(05):157-9. Available from: https://eijmr.org/index.php/eijmr/article/view/1482