Nurdin, S., K. Wei, L., V. Sivaguru, M., Ibrahim, N., A. Khairuddin, S., & Athirah M.Sukri, H. (2018). Recovery of Calcium Carbonate from Pre-Treated Duck Eggshell Waste (PDEW) Using Dissolved Air Flotation Technique (DAFT). International Journal of Engineering & Technology, 7(3.7), 577-581. https://doi.org/10.14419/ijet.v7i3.7.19055