Toshmatova G. A., Xojiqulova D. N. The Importance of Microelements in Mastering Lessons by Schoolchildren Studying in Urban and Rural Conditions . AJPMHS [Internet]. 2023 Oct. 5 [cited 2024 Jul. 4];1(8):1-4. Available from: http://grnjournal.us/index.php/AJPMHS/article/view/869