Vol. 22 No. 1 (2020)
Published:
2020-08-27
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https://doi.org/10.24252/jumdpi.v22i1.15482 Views: 2001 / PDF Downloads: 3493
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https://doi.org/10.24252/jumdpi.v22i1.6347 Views: 265 / PDF Downloads: 1965 / PDF Downloads: 0 / PDF Downloads: 0
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https://doi.org/10.24252/jumdpi.v22i1.15546 Views: 1336 / PDF Downloads: 2887