Vol. 5 No. 1 (2016)
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https://doi.org/10.24252/jpm.v5i1.977 Views: 2945 / PDF Downloads: 1445
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https://doi.org/10.24252/jpm.v5i1.979 Views: 1072 / PDF Downloads: 750
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https://doi.org/10.24252/jpm.v5i1.984 Views: 2738 / PDF Downloads: 5929