ArchiveVolume 6, Issue 2, April 2017
Mulualem Daba Tola
Pages: 35-44     Published Online: Mar. 27, 2017
DOI: 10.11648/j.ss.20170602.11        Views 1894      Downloads 76
Yishak Gecho
Pages: 45-56     Published Online: Apr. 26, 2017
DOI: 10.11648/j.ss.20170602.12        Views 3738      Downloads 213
Alemayehu Bogale, Wubegzier Mekonnen
Pages: 57-62     Published Online: Apr. 28, 2017
DOI: 10.11648/j.ss.20170602.13        Views 1805      Downloads 49
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