“USING THE WATER QUALITY INDEX (WQI-NSF) FOR GROUNDWATER ASSESSMENT FOR DRINKING PURPOSES IN NORTH, EAST AND NORTHEAST KIRKUK CITY , IRAQ”, Brit. Jour. of Glob. Eco. and Sust. Deve., vol. 13, pp. 53–62, Feb. 2023, Accessed: Jan. 31, 2026. [Online]. Available: https://journalzone.org/index.php/bjgesd/article/view/234