![](https://journal.ugm.ac.id/v3/public/journals/79/cover_issue_499_en_US.jpg)
Volume 9, Number 2, 2015
Vol 9 No 2 (2015)
November 16, 2023
November 16, 2023
November 16, 2023
November 16, 2023
November 16, 2023
November 16, 2023
November 16, 2023
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