Japar, Siti, and Freedy Kurniawan. 2020. “Lightweight Concrete With Mixed Foam Agent, Polymer and Bonding to Reach 300 Kg/Cm²”. IJIEEB International Journal of Integrated Education, Engineering and Business EISSN 2615-1596 PISSN 2615-2312 3 (1), 55-63. https://doi.org/10.29138/ijieeb.v3i1.1073.