Vol. 5 No. 1 (2016)
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https://doi.org/10.24252/jpm.v5i1.977 Views: 2856 / PDF Downloads: 1342
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https://doi.org/10.24252/jpm.v5i1.979 Views: 1066 / PDF Downloads: 737
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https://doi.org/10.24252/jpm.v5i1.984 Views: 2582 / PDF Downloads: 5705