Octriany, Y. and Ratnawulan, R. 2023. Effect E. coli Bacteria Concentration as Self Healing on Compressive Strength and Hydrophobic Properties on Micro Cracks of Concrete . Jurnal Penelitian Pendidikan IPA. 9, SpecialIssue (Dec. 2023), 989–997. DOI:https://doi.org/10.29303/jppipa.v9iSpecialIssue.5911.