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DOI：http://dx.doi.org/10.26855/er.2018.02.005 4242 Views
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DOI：http://dx.doi.org/10.26855/er.2018.02.002 4570 Views
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Author：Sri Yuniati Putri Koes Hardini, Durri Andriani Date：March 5,2018
DOI：Full Text: PDF DOI: 10.26855/er.2018.02.004 8825 Views
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DOI：http://dx.doi.org/10.26855/er.2018.02.001 7958 Views
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DOI：http://dx.doi.org/10.26855/er.2018.02.003 10950 Views
