Vol. 1 No. 1 (2018)
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https://doi.org/10.24252/djps.v1i1.6425 Views: 4249 / PDF Downloads: 3605
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https://doi.org/10.24252/djps.v1i1.6427 Views: 3353 / PDF Downloads: 3014
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https://doi.org/10.24252/djps.v1i1.6439 Views: 838 / PDF Downloads: 550