“Abundance, Diversity, and Water Quality Assessment of Epilithic Diatoms as Bioindicator in The Dem River, Glothak Waterfall, Wagir District, Malang Regency” (2025) Al-Kauniyah: Jurnal Biologi, 19(1), pp. 52–62. doi:10.15408/kauniyah.v19i1.42143.