Sutiani, Ani, Department of Chemistry, Faculty of Mathematics and Natural Sciences, State University of Medan, Medan Indonesia (Indonesia)
Sutiani, Ani, Department of Chemistry, Universitas Negeri Medan (Indonesia)
Sutiani, Ani, Department of Chemistry, Faculty of Mathematics and Natural Sciences, State University of Medan (Indonesia)
Syafei, Minda Shafina
Syafei, Minda Shafina, Chemistry Department, Universitas Negeri Medan, Jl. Willem Iskandar, Pasar V, Medan 20221, Indonesia (Indonesia)

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