ArchiveVolume 9, Issue 2, June 2020
Xuan-Vien Nguyen, Thanh-Huy Tran
Pages: 51-55     Published Online: Apr. 17, 2020
DOI: 10.11648/j.jenr.20200902.11        Views 274      Downloads 159
Hyacinthe Kazindu, Christophe Mupenzi, Abias Maniragaba
Pages: 56-69     Published Online: May 14, 2020
DOI: 10.11648/j.jenr.20200902.12        Views 201      Downloads 60
Xuan-Vien Nguyen, Thanh-Hau Nguyen, Trang-Doanh Nguyen, Tien-Fu Yang
Pages: 70-74     Published Online: May 14, 2020
DOI: 10.11648/j.jenr.20200902.13        Views 206      Downloads 25
Guy Bertrand Tchaya, Jean Materne Ango, Etienne Tchoffo Houdji, Darmand Roger Djoulde, Noël Djongyang
Pages: 75-80     Published Online: Jun. 4, 2020
DOI: 10.11648/j.jenr.20200902.14        Views 174      Downloads 64
Abdullahi Ahmed, Bashir Isyaku Kunya
Pages: 81-87     Published Online: Jul. 13, 2020
DOI: 10.11648/j.jenr.20200902.15        Views 120      Downloads 31
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