Deviyani, D., Oginawati, K., & Salami, I. R. S. (2026). The Presence of Organochlorine and Organophosphate Pesticide Residue in Groundwater at the Upper Citarum Watershed. Journal of Engineering and Technological Sciences, 58(2), 166–185. https://doi.org/10.5614/j.eng.technol.sci.2026.58.2.2