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DOI : https://doi.org/10.31539/spej.v3i1.793
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DOI : https://doi.org/10.31539/spej.v3i1.991
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DOI : https://doi.org/10.31539/spej.v3i1.944
Abstract views: 147 , pdf downloads: 185 -
DOI : https://doi.org/10.31539/spej.v3i1.928
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DOI : https://doi.org/10.31539/spej.v3i1.915
Abstract views: 308 , pdf downloads: 913