Anuar, M.A. and Ahmad, S. (2025) “Producing Fertiliser for Bok Choy Using Waste From Silica Water Filter”, Research Progress in Mechanical and Manufacturing Engineering, 6(1), pp. 1–9. Available at: https://publisher.uthm.edu.my/periodicals/index.php/rpmme/article/view/18771 (Accessed: 12 March 2026).