NATANAEL BANGUN; CUT NURAINI; ABDI SUGIARTO. Optimization of Drainage System on Jalan Sisingamangaraja to Overcome Flooding in Tigalingga Village, Dairi Regency. Equivalent : Journal of Economic, Accounting and Management, [S. l.], v. 4, n. 1, p. 1445–1454, 2026. DOI: 10.61994/equivalent.v4i1.1830. Disponível em: https://jurnal.dokicti.org/index.php/equivalent/article/view/1830. Acesso em: 21 may. 2026.