Table of Contents
Articles
Afri Rahmadani, Irwan Nasution, Thamrin Nasution
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1-5
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Erna Elfriza Sibarani, Usman Tarigan
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6-10
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Zulhairi Zulhairi, Beby Masitho
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11-15
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Syahraji Syahraji, Irwan Nasution
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16-20
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Siswanto Siswanto, Rosmala Dewi
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21-26
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Efridawati Efridawati, M. Arif Nasution
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