Mail, A., Ebang, N. Fauf, and M. Fachry Hafid. “Composition Analysis of Perforated Concrete Roster Raw Materials To Improve Product Compressive Strength Using Experimental Design Approach”. Journal of Industrial System Engineering and Management, vol. 1, no. 1, Mar. 2022, pp. 27-35, doi:10.56882/jisem.v1i1.5.