Jasmidi, Jasmidi, Chemistry Department, Faculty of Mathematics and Natural Science, Universitas Negeri Medan (Indonesia)
Juwitaningsih, Tita, Department of Chemistry, Faculty of Mathematics and Natural Science, State Universitas Negeri Medan (Indonesia)
Juwitaningsih, Tita, Department of Chemistry, Faculty of Mathematics and Sciences, Universitas Negeri Medan, Medan 20221, Indonesia (Indonesia)
Juwitaningsih, Tita, Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Medan, Jl. William Iskandar Psr V. Medan Estate Medan
Juwitaningsih, Tita, Chemistry Department Faculty of Mathematics and Natural Science, State University of Medan (Indonesia)

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