Arzumanyan A. FEATURES OF THE APPLICATION OF THE MODERN METHOD OF FOUR-VOLUME TRAINING. Educ-21st-Century [Internet]. 2022 Jul. 21 [cited 2024 Apr. 20];7(1):115-22. Available from: https://journals.ysu.am/index.php/Educ-21st-Century/article/view/vol7_no1_2022_pp115-122