Fitria M, Dian, Rosmasita, Rosmasita, Yanti, Emma, AND Bagariang, Ramona. " Pandan Lake Water Quality Survey has Located in Pinangsori Sub-District, Central Tapanuli District" JURNAL SUMBERDAYA AKUATIK INDOPASIFIK [Online], Volume 4 Number 2 (10 November 2020)