ArchiveVolume 8, Issue 2, April 2019
Natalia Gulius
Pages: 36-43     Published Online: Apr. 18, 2019
DOI: 10.11648/j.ss.20190802.11        Views 501      Downloads 53
Lan Ma
Pages: 44-51     Published Online: Apr. 26, 2019
DOI: 10.11648/j.ss.20190802.12        Views 515      Downloads 45
Abdelkerim Marcelin, Ndingangar Teadoum Emmanuel
Pages: 52-61     Published Online: May 7, 2019
DOI: 10.11648/j.ss.20190802.13        Views 547      Downloads 53
Rafael Rey
Pages: 62-66     Published Online: May 23, 2019
DOI: 10.11648/j.ss.20190802.14        Views 478      Downloads 49
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