Sianipar HF, Siahaan TM, Sijabat A. Counseling on Good Water Quality for the Cultivation of Batak Fish in Toba Lake Waters: Penyuluhan Kualitas Air yang Baik untuk Budidaya Ikan Batak di Perairan Danau Toba. j. mattawang [Internet]. 2021 Apr. 10 [cited 2026 Apr. 24];2(1):23-6. Available from: https://qemsjournal.org/index.php/mattawang/article/view/310