Vol. 3 No. 3 (2015)
Published:
2019-02-19
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https://doi.org/10.24252/jdi.v3i3.7440 Views: 2164 / PDF Downloads: 1677
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https://doi.org/10.24252/jdi.v3i3.7486 Views: 388 / PDF Downloads: 156
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https://doi.org/10.24252/jdi.v3i3.7498 Views: 1509 / PDF Downloads: 600