Safitri, Intan Ayu, Universitas Negeri Medan (Indonesia)
Safitri, Mutya Fika
Saisa, Saisa, Department of Chemical Engineering, Faculty of Engineering, Universitas Serambi Mekkah, Banda Aceh 23245, Aceh, Indonesia. (Indonesia)
Salsabila, Fuaddinda P, Chemistry Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan (Indonesia)
Samosir, Erika Yusnidar, Departement of Chemistry, Faculty of Matemathics and Natural Science, Universitas Negeri Medan

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