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Syahirah, Atikah Nur, Department of Chemistry, Faculty Of Mathematics annd Natural Sciences, State University of Medan (Indonesia)
Syahirah, Atikah Nur, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, 20221, Indonesia (Indonesia)
Syahputra, Ricky Andi, Department of Chemistry, Universitas Negeri Medan, (Indonesia)
Syahputra, Ricky Andi, Universitas Negeri Medan (Indonesia)
Syahputra, Ricky Andi, Chemistry Department, Faculty of Mathematics and natural Sciences, Universitas Negeri Medan (Indonesia)
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