Karim Kasim, Kartika, Sastro M. Wantu, Rosman Ilato, & Juriko Abdussamad.
" Grey Water and Black Water Wastewater Policy in Improving the Quality of Environmental Management in Gorontalo City, Indonesia." <em>Iapa Proceedings Conference</em> [Online], (2024): 564-574. Web. 26 May. 2026