Sari, Y. (2019). PENENTUAN KUALITAS FISIKA (WARNA, SUHU, DAN TDS) DARI SAMPEL AIR SUMUR WARGA DI KECAMATAN DUMAI TIMUR. Journal Of Research And Education Chemistry, 1(2), 9. Retrieved from http://journal.uir.ac.id/index.php/jrec/article/view/3512