Marbun, Elwy Asrianto, Jurusan Pendidikan Teknik Bangunan, Universitas Negeri Medan, Jl. Williem Iskandar, Medan
Marhanita, Sri, Department of Chemistry, Faculty of Mathematics and Science, Universitas Negeri Medan, Medan (Indonesia)
Masmur, Indra, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara (Indonesia)
Masmur, Indra, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan 20155, Indonesia (Indonesia)
Maulina, Rissah, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, 20221, Indonesia (Indonesia)

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