Vol 8, No 1 (2020)

DOI: http://dx.doi.org/10.55171/obs.v8i1

Table of Contents

Yizri Novrida, Anisa Ayu Tiara, Rangga Pusmaika
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496 - 500
Rita Ariesta, Deden Gumilang Nugraha
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501 - 518
Mela Mustika Sari, Fatmawati Karim
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519 - 536
Anis Ervina, Vivi Amelia
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537 - 558