Selly, Rini, Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Medan (Indonesia)
Sembiring, Sindi H, Department of Chemistry, Faculty of Mathematics and Natural Sciences, State University of Medan (Indonesia)
Setiarso, Pirim, Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas Negeri Surabaya, Jl. Ketintang Wiyata, No. 62, Surabaya, 60231, East Java, Indonesia (Indonesia)
Shauqiyah, Najwa, Department of Chemistry, Faculty of Mathematics and Natural Sciences, State University of Medan, Medan Indonesia (Indonesia)
Siagian, ElySabet Pratiwi, Departemen Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Medan (Indonesia)

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