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Syahirah, Atikah Nur, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, 20221, Indonesia (Indonesia)
Syahputra, Ricky Andi, Chemistry Depatment, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, Jl. Willem iskandar Ps. V, Medan estate, 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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