sophian, A. (2022) “Escherichia coli Bacteria Test on Polluted Meatballs With Several Variations of Positive Control Concentration: Escherichia coli Bacteria Test on Polluted Meatballs With Several Variations of Positive Control Concentration”, BiosciED: Journal of Biological Science and Education, 3(1), pp. 32–38. doi: 10.37304/bed.v3i1.4908.