Vol. 4 No. 1 (2016)
Published:
2016-05-01
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https://doi.org/10.24252/jdi.v4i1.6783 Views: 813 / PDF Downloads: 581
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https://doi.org/10.24252/jdi.v4i1.6784 Views: 2193 / PDF Downloads: 2036
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https://doi.org/10.24252/jdi.v4i1.6785 Views: 789 / PDF Downloads: 617