ArchiveVolume 8, Issue 1, June 2020
Mezgebu Mihret Kefale, Selamawit Lake Fenta, Fentahun Yenealem Beyene, Natnael Atnafu Gebeyehu
Pages: 1-9     Published Online: Jun. 4, 2020
DOI: 10.11648/j.ejb.20200801.11        Views 224      Downloads 71
Yuri Pivovarenko
Pages: 10-15     Published Online: Aug. 27, 2020
DOI: 10.11648/j.ejb.20200801.12        Views 85      Downloads 35
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