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ArchiveVolume 8, Issue 3, May 2020
Ephrem Ahadu
Pages: 86-91     Published Online: Jun. 20, 2020
DOI: 10.11648/j.hss.20200803.11        Views 279      Downloads 151
Daniel Techan, Bisrat Tesfay
Pages: 92-99     Published Online: Jun. 29, 2020
DOI: 10.11648/j.hss.20200803.12        Views 300      Downloads 102
Wang Sha, Xiao Jiugen
Pages: 100-103     Published Online: Jun. 29, 2020
DOI: 10.11648/j.hss.20200803.13        Views 269      Downloads 144
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