Ismail, N.N. (2017) “Experimental study on Ion Exchange Rate of Calcium Hardness in Water softening process Using Strong Acid Resin DOWEX HCR S/S”,
Nahrain University College of Engineering Journal, 19(1), pp. 107–114. Available at:
https://oldjournal.eng.nahrainuniv.edu.iq/index.php/main/article/view/50 (Accessed: 12 January 2025).