Muchtar, Zainuddin, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, 20221, Indonesia (Indonesia)
Muchtar, Zainuddin, Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Medan (Indonesia)
Muhammad Yusuf, Muhammad Yusuf, Department of Chemistry Universitas Negeri Medan Jl. Willem Iskandar Pasar V Medan Estate, Medan 20221, Indonesia (Indonesia)
Munte, Felivia Angelina, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan (Indonesia)
Munzirwan, Rudi, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan (Indonesia)

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