“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): 52-62. https://doi.org/10.15408/kauniyah.v19i1.42143.