Harry, H.S. et al. 2021. The Effect Of Aerobic Biofilter Method WWTP System On Phosphate In Kediri District Hospital Year 2020. Indonesian Journal of Nutritional Epidemiology and Reproductive. 4, 3 (Sep. 2021), 94–101. DOI:https://doi.org/10.30994/ijner.v4i3.205.