Kharel HL, Sharma RK, Kandel TP. Water Hardness Removal Using Wheat Straw and Rice Husk Ash Properties. Nepal Journal of Science and Technology [Internet]. 2016 Aug. 5 [cited 2024 May 5];17(1):11-6. Available from: https://www.nepjol.info/index.php/NJST/article/view/25057