Donkor, Emmanuel, John Dadzie, and Mark Afful Osae. “DEVELOPING A NEW PRECAST CONCRETE DRAINAGE SYSTEM TOWARDS COST SAVINGS”. International Journal of Innovation and Development 2, no. 1 (August 15, 2024). Accessed September 19, 2024. https://ijid.kstu.edu.gh/index.php/ijid/article/view/33.