Gani, Irwan, Jamaluddin Jamaluddin, and Darman Darman. 2023. “The Effect of Adding Shells As Aggregate on the Level of Tensile Strength of Concrete”. Zona Laut Jurnal Inovasi Sains Dan Teknologi Kelautan 4 (3):361-67. https://doi.org/10.62012/zl.v4i3.31756.