Susilawati Amdayani Department of Chemistry, Universitas Negeri Medan, Indonesia Indonesia
Ratu Evina Dibyantini Department of Chemistry, Universitas Negeri Medan, Indonesia Indonesia
Dewi Syafriani Department of Chemistry, Universitas Negeri Medan, Indonesia Indonesia
Makharany Dalimunthe Department of Chemistry, Universitas Negeri Medan, Indonesia Indonesia
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