ArchiveVolume 4, Issue 6, December 2019
Everest Turyahikayo
Pages: 80-87     Published Online: Dec. 13, 2019
DOI: 10.11648/j.her.20190406.11        Views 565      Downloads 185
Imani Behzad, Mosavi Nilofar
Pages: 88-91     Published Online: Dec. 16, 2019
DOI: 10.11648/j.her.20190406.12        Views 548      Downloads 160
Xiaohua Ning
Pages: 92-101     Published Online: Dec. 26, 2019
DOI: 10.11648/j.her.20190406.13        Views 558      Downloads 110
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