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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jcer.v3n1.p29-34
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jjpk.v6i2.32415
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jppk.v10i1.20763