ArchiveVolume 6, Issue 6, December 2017
Sumiko Asai
Pages: 145-152     Published Online: Jan. 10, 2018
DOI: 10.11648/j.ijber.20170606.11        Views 2507      Downloads 132
Ayoub Taha Sidahmed
Pages: 153-161     Published Online: Jan. 18, 2018
DOI: 10.11648/j.ijber.20170606.12        Views 1876      Downloads 117
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