RAHMAH ALIYAH; AMNAH FARIDAH HASIBUAN; NAZWA ZAHRA; RISKI ANANDA SIREGAR; SARI WULANDARI. Dampak Aktivitas Ekonomi terhadap Pencemaran Kualitas Air : Studi Kasus: Sungai Deli, Kota Medan. OPTIMAL Jurnal Ekonomi dan Manajemen, [S. l.], v. 5, n. 3, p. 33–41, 2025. DOI: 10.55606/optimal.v5i3.6794. Disponível em: https://researchhub.id/index.php/optimal/article/view/6794. Acesso em: 21 jul. 2025.