Ердесов, Н.Ж., А.О. Омарова, and Ч.У. Исмаилов. “Provision of Water Supply and Sanitation Services in Karaganda Region”. Fundamental and Experimental Biology 11128, no. 3 (September 30, 2023): 216–223. Accessed February 15, 2026. https://feb.buketov.edu.kz/bmg-vestnik/article/view/57.