DOI: https://doi.org/10.17509/gea.v17i2.6888.g5378
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Copyright (c) 2017 Jupri Jupri, Asep Mulyadi
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.