Hamidon, Husna Nabilah, Sumayyah Aimi Mohd Najib, and Syazwani Aliah. 2021. “Water Quality of Selected Rivers in Behrang River Catchment, Perak Malaysia: Kualiti Air Sungai Terpilih Di Lembangan Sungai Behrang, Perak Malaysia”. GEOGRAFI 9 (2):107-18. https://doi.org/10.37134/geografi.vol9.2.6.2021.