Vol. 2 No. 1 (2012)
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https://doi.org/10.24252/jpm.v2i1.758 Views: 1930 / PDF Downloads: 1185
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https://doi.org/10.24252/jpm.v2i1.749 Views: 6086 / PDF Downloads: 4224
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https://doi.org/10.24252/jpm.v2i1.748 Views: 520 / PDF Downloads: 764
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https://doi.org/10.24252/jpm.v2i1.747 Views: 1727 / PDF Downloads: 1982