Тимків ДФ, Костів ЯВ. DEVELOPMENT OF CONCEPTION OF INCREASE OF EFFICIENCY WORKS OF DUG-OUTS OF GAS. Number [Internet]. 2019 Feb. 25 [cited 2026 Feb. 15];(1(33):261-7. Available from: https://www.pvntsh.nung.edu.ua/index.php/number/article/view/124