SUJIMAN, Sujiman. Water Quality Condition From Upstream To Downstream Of Mahakam River, Kutai Kartanegara District, East Kalimantan. International Journal of Environmental, Sustainability, and Social Science (IJESSS), [S. l.], v. 4, n. 4, p. 1199–1210, 2023. DOI: 10.38142/ijesss.v4i4.752. Disponível em: https://journalkeberlanjutan.com/index.php/ijesss/article/view/752. Acesso em: 21 jul. 2026.