Hakim, M. S.; Hermayantiningsih, D.; Dewi, S. R. .; Andhita, N. A.; Tantri; Krissilvio, E. J. . Analysis of Acidity and Alkalinity Levels in Primary Drainage Canal IV Bukit Keminting, Palangka Raya, Central Kalimantan. IJCR 2023, 8.