Damanik, Marini, Chemistry Department, Faculty of Mathematics and natural Sciences, Universitas Negeri Medan, Medan, 20371, Sumatera Utara (Indonesia)
Damanik, Marini, Billingual Program of Chemistry Depatment, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, Jl. Willem iskandar Ps. V, Medan estate, Indonesia. (Indonesia)
Damanik, Marini, Department of Chemistry, State University of Medan (Indonesia)
Damanik, Marini, State University of Medan, Address, Medan 2021, Indonesia (Indonesia)
Damanik, Virni Grace Irene, Chemistry Department, Indonesian University of Education, Bandung, Indonesia (Indonesia)

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