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Kualitas Mikrobiologi Air Sungai Batang Toru, Sumatera Utara Berdasarkan Bakteri Indikator Pencemaran (Total Coliform, Fecal Coliform, Dan Escherichia Coli. Nr [Internet]. 2026 Aug. 15 [cited 2026 Oct. 13];2(1):59-64. Available from: https://publication.ar-raniry.ac.id/index.php/natura/article/view/274