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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v6i2.3697
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/core.6.1.001-009
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.300491/tapiannauli.v6i1.180
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.300491/tapiannauli.v6i1.197
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.300491/tapiannauli.v6i1.208