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ArchiveVolume 8, Issue 6, December 2020
Waktole Bayisa Debelo
Pages: 189-200     Published Online: Nov. 16, 2020
DOI: 10.11648/j.jps.20200806.11        Views 30      Downloads 9
Mesafint Minale, Hailemariam Fisha, Abeje Tedla, Reta Eshetu
Pages: 201-207     Published Online: Nov. 23, 2020
DOI: 10.11648/j.jps.20200806.12        Views 17      Downloads 13
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