This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Ciptaan disebarluaskan di bawah Lisensi Creative Commons Atribusi 4.0 Internasional.
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Amirzan Amirzan
Universitas Jabal Ghafur, Sigli, Indonesia
Indonesia
Lektor
Indra Kasih
FIK Unimed, Medan, Indonesia
Indonesia
FIK Unimed, Medan, Indonesia
Deni Rahman Marpaung
FIK Unimed Medan,Indoneisa
FIK Unimed Medan,Indoneisa
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