Silaen, Srinatalia. “KAJIAN TINGKAT PENCEMARAN AIR DI KAWASAN PERAIRAN DANAU TOBA TERHADAP EKOSISTEM IKAN”. Agroprimatech 6, no. 2 (October 31, 2022): 1–6. Accessed December 5, 2025. https://jurnal.unprimdn.ac.id/index.php/Agroprimatech/article/view/2986.