ЭГ-15 va ЭГ-20 TIPIDAGI GIDRAVLIK EKSKAVATRLARNI QO ‘LLASH ORQALI FOYDALI QAZILMA KONLARINI OCHIQ USULDA QAZIB OLISHNI SAMARADORLIGIMI OSHIRISH. Uzbek. Sch. J. 2022;10:298-302. Accessed October 2, 2025. https://uzbekscholar.com/index.php/uzs/article/view/380