Nuramidah Hamidon, Siti Hajar Yahya, Norshuhaila Mohd Sunar, Mimi Suliza Muhamad, Hasnida Harun, Hazren A. Hamid, R. Ali. Surface Water Treatment by using Biosand Filter and Hibiscus Rosa Sinensis Leaves as Heavy Metal Adsorption in Kangkar Senangar’s River, Johor. IJAST [Internet]. 2020May20 [cited 2025May19];29(08):72 -83. Available from: http://sersc.org/journals/index.php/IJAST/article/view/16976