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Apriwidyanti, Wella, Chemistry Department, Faculty of Mathematics and Natural Science, Universitas Negeri Medan, Medan 20221, Indonesia (Indonesia)
Apriyani, Veny, Department of Chemistry- Faculty of Mathematics and Natural Sciences Universitas Negeri Medan
Apriyani, Veny, Department of Chemistry- Faculty of Mathematics and Natural Sciences Universitas Negeri Medan (Indonesia)
AR, Muhammad Rudi
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