DOI: https://doi.org/10.17509/gea.v7i1.1706.g1157
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Copyright (c) 2016 Dadang Sungkawa
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Dadang Sungkawa
Departemen Pendidikan Geografi
Universitas Pendidikan Indonesia
Indonesia