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		Kusuma Dewi, Ida Ayu Gede, 		Suyanto, Hery, 		Alit Paramarta, Ida Bagus, AND 		Suastika, K..
" ANALISIS KUALITATIF PADA BATU KECUBUNG KOPI MENGGUNAKAN LIBS" <em>BULETIN FISIKA</em> [Online], Volume 17 Number 2 (1 August 2016)