Nugraha, Asep Wahyu, Department of Chemistry, Faculty of Mathematics and Sciences, Universitas Negeri Medan, Medan 20221, Indonesia (Indonesia)
Nugraha, Asep Wahyu, Chemistry Department, Faculty of Mathematics and Sciences, Medan State University, Medan (Indonesia)
Nugraha, Asep Wahyu, Chemistry Departement, Faculty of Mathematics and natural Sciences, Universitas Negeri Medan (Indonesia)
Nugraha, Asep Wahyu, Department of Chemistry, Faculty of Mathematics and Sciences, Universitas Negeri Medan, Medan 20221, Indonesia (Indonesia)
Nur, A Masrukhan, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Semarang State University, Semarang (Indonesia)

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