Azahar, Anis Faezah, and Noor Khazanah A. Rahman. “A Study on Properties of Concrete As a Potential Innovative of Coarse Aggregate With Coconut Shell”. Progress in Engineering Application and Technology 2, no. 1 (June 16, 2021): 361–372. Accessed July 18, 2024. https://penerbit.uthm.edu.my/periodicals/index.php/peat/article/view/768.