Aslonov Anvar Akram o'g'li, and Tursunov Akmal. “OG’IR METALLAR TUSHUNCHASI VA TURLARI”. Ustozlar uchun 51, no. 2 (January 4, 2024): 192–196. Accessed November 22, 2024. https://pedagogs.uz/01/article/view/665.