Mulkan Syahputra, supriadi, and Purba Marpaung. 2022. “The Mapping of Irrigated Paddy Fields Which Were Polluted by Detergent Waste in Kolam Village, Percut Sei Tuan Sub-District, Deli Serdang District”. Jurnal Online Pertanian Tropik 8 (2):144-49. https://doi.org/10.32734/jopt.v8i2.8078.