Vol. 5 No. 1 (2016)
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https://doi.org/10.24252/jpm.v5i1.977 Views: 2959 / PDF Downloads: 1459
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https://doi.org/10.24252/jpm.v5i1.979 Views: 1074 / PDF Downloads: 752
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https://doi.org/10.24252/jpm.v5i1.984 Views: 2751 / PDF Downloads: 5951