THE MAIN FACTORS OF ECONOMIC AND ENERGY EFFICIENCY OF MINING TRANSPORTATION MACHINES IN MINERAL EXTRACTION TECHNOLOGIES: Yangi O’zbekiston taraqqiyotida tadqiqotlarni o’rni va rivojlanish omillari. ilmiy [Internet]. 2024 Apr. 13 [cited 2024 Oct. 5];6(2):25-9. Available from: http://pedagoglar.org/index.php/04/article/view/1455