Utami, Lisa, Fakultas Tarbiyah dan Keguruan, Universitas Islam Negeri Sutan Syarif Kasim Riau
Utami, Yunita Dwi, Chemistry Department, Faculty of Mathematics and Natural Science, Universitas Negeri Medan, Medan 20221, Indonesia (Indonesia)
Utami, Yunita Dwi, Chemistry Department, Faculty of Mathematics and Natural Science, Universitas Negeri Medan (Indonesia)

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