Articles
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DOI : https://doi.org/10.31539/spej.v5i1.3171
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DOI : https://doi.org/10.31539/spej.v5i1.2908
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DOI : https://doi.org/10.31539/spej.v5i1.3236
Abstract views: 97 , pdf downloads: 107 -
DOI : https://doi.org/10.31539/spej.v5i1.3173
Abstract views: 23 , pdf downloads: 48