DOI: https://doi.org/10.17509/gea.v21i1.31634.g14625
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Copyright (c) 2021 Peni Saptorini, Abd. Rahman A. Ghani, Maman Abdul Majid Binfas
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.