Putri Rumaira, Ainaya, and Dwi Astuti. “Effectiveness of Wastewater Treatment Plant (WWTP) in Semanggi, Surakarta City”. International Journal of Science and Environment (IJSE) 6, no. 1 (February 1, 2026): 219–225. Accessed March 17, 2026. https://ijsenet.com/index.php/IJSE/article/view/325.