ArchiveVolume 6, Issue 1, February 2017
Un-Gyong Ri, Hyok-Chol Kim
Pages: 1-4     Published Online: Feb. 24, 2017
DOI: 10.11648/j.jwer.20170601.11        Views 1942      Downloads 75
Olure-Bank Adeyinka Michael, Olayiwola Wumi
Pages: 5-16     Published Online: Mar. 2, 2017
DOI: 10.11648/j.jwer.20170601.12        Views 1371      Downloads 73
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