Mohamad Khairuddin, M. A., & WAN MOHAMED @ WAN ABD GHANI, W. A. (2021). Development of Phosphorus and Ammonium-Nitrogen Concentration Calibration Curve Using Laboratory Resistivity Method at Alkaline pH Condition. Recent Trends in Civil Engineering and Built Environment, 3(1), 919–926. Retrieved from https://publisher.uthm.edu.my/periodicals/index.php/rtcebe/article/view/3178