Doneva N, Hadzi-Nikolova M, Mijaklovski S. ANALYSIS OF REQUIRED CONSTRUCTION TIME FOR DRIFT IN ROCK TYPE – LEAD AND ZINK ORE. NRT [Internet]. 2019Oct.22 [cited 2024Dec.20];13(13):5-. Available from: https://js.ugd.edu.mk/index.php/NRT/article/view/3065