Simatupang, Lisnawaty, Chemistry Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, Indonesia (Indonesia)
Simatupang, Lisnawaty, Department of Chemistry- Faculty of Mathematics and Natural Sciences Universitas Negeri Medan (Indonesia)
Simatupang, Lisnawaty, Chemistry Depatment, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, Jl. Willem iskandar Ps. V, Medan estate, Indonesia. (Indonesia)
Simatupang, Lisnawaty, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan (Indonesia)
Simatupang, Lisnwaty, Chemistry Department, Faculty of Mathemathics and Natural Science, Universitas Negeri Medan (Indonesia)

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