This issue available online in September 2021, All articles in this issue (5 articles) were authored/co-authored by 12 authors from 2 countries (Nigeria and Indonesia).
Table of Contents
Articles
Abdullahi Sani
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1-13
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Muliadi Muliadi, Aji Sofyan Effendi, Muhammad Ikbal
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14-31
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Ika Rahmawati, Ani Wilujeng Suryani
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32-48
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Astri Dyastiarini, Gugus Irianto, Roekhudin Roekhudin
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49-60
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Selfiah Selfiah, Iwan Triyuwono, Yeney Widya Prihatiningtyas
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61-74
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