RUSLAN, HANIS NADIAH, Khairunisa Muthusamy, Sharifah Maszura Syed Mohsin, and M. S. Kirgiz. 2021. “Periwinkle Shell As Mixing Ingredient in Concrete: A Review”. CONSTRUCTION 1 (2):21-30. https://doi.org/10.15282/construction.v1i2.6499.