Developing a water quality model using fuzzy approach for the Al-Gharraf River in Southern Iraq. Periodicals of Engineering and Natural Sciences, [S. l.], v. 11, n. 1, p. 144–145, 2025. DOI: 10.21533/pen.v11.i1.85. Disponível em: https://pen.ius.edu.ba/index.php/pen/article/view/85. Acesso em: 1 may. 2026.