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Kurbonov Oybek Muhammadqulovich, To’xtashev Alisher Baxodirovich, Istamov Zafarjon Vohid o’g’li, Abdixakimova Malika Amir qizi. CALCULATION OF ECONOMIC EFFICIENCY OF USING VARIABLE FREQUENCY DRIVE IN PUMPING UNITS IN UNDERGROUND LEACHING TECHNOLOGY OF MINERAL RESOURCES. Web discov. [Internet]. 2025 Mar. 26 [cited 2025 Jun. 2];3(3):73-8. Available from: http://webofjournals.com/index.php/3/article/view/3696