ArchiveVolume 6, Issue 6, December 2017
Trinh Van Hanh, Tran Thi Thu Huyen, Nguyen Quoc Huy, Nguyen Thuy Hien
Pages: 140-143     Published Online: Jan. 10, 2018
DOI: 10.11648/j.ajep.20170606.11        Views 2160      Downloads 77
Noura Mohammad Al-Sarawi
Pages: 144-155     Published Online: Jan. 17, 2018
DOI: 10.11648/j.ajep.20170606.12        Views 2389      Downloads 84
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