Nasution, Hafni Indriati, Chemistry Department, Faculty of Mathematics and natural Sciences, Universitas Negeri Medan, Medan, 20371, Sumatera Utara (Indonesia)
Nasution, Hafni Indriati
Nasution, Haris Munandar, Department of Pharmacy, Universitas Muslim Nusantara Al Washliyah (Indonesia)
Nasution, Lia M, Department of Chemistry, Faculty Of Mathematics annd Natural Sciences, State University of Medan, (Indonesia)
Nasution, Mutiara Agustina, Jurusan Kimia, Universitas Negeri Medan (Indonesia)

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