SAID AKBAR KHAN; TARIQ ATTA UR REHMAN; TAIMOOR AHMED NASIR; SUNIL AFTAB; AYESHA HAFEEZ. Assessment of Waste Water Treatment Plant Efficiency through Physico-Chemical Analysis: A Case Study of I-9 Waste Water Treatment Plant, Islamabad, Pakistan. International Journal of Economic and Environmental Geology, [S. l.], v. 8, n. 4, p. 16–20, 2017. DOI: 10.46660/ijeeg.v8i4.724. Disponível em: https://econ-environ-geol.org/index.php/ojs/article/view/724. Acesso em: 28 feb. 2026.