Nabuuma, R., Tigalana, D. and Otim, D. (2023) “Effect of Cow Dung Ash and Recycled Concrete Aggregates on the Mechanical and Physical Properties of Concrete: Central Composite Design (CCD) Optimisation”, East African Journal of Engineering, 6(1), pp. 167-187. doi: 10.37284/eaje.6.1.1573.