Sari, D.A., Sukanta, S. and Hakiim, A. 2018. Anaerobic Wastewater Treatments: Prediction of Retention Time on RT/RW Plant. International Series on Interdisciplinary Science and Technology. 3, 1 (Apr. 2018), 134–137. DOI:https://doi.org/10.23960/ins.v3i1.134.