ArchiveVolume 6, Issue 2, April 2017
Mu’azu Saidu Badara
Pages: 17-22     Published Online: Mar. 10, 2017
DOI: 10.11648/j.jwer.20170602.11        Views 1421      Downloads 93
Ke Gao, Nan Bai, Kun Huang
Pages: 23-26     Published Online: Mar. 29, 2017
DOI: 10.11648/j.jwer.20170602.12        Views 1575      Downloads 133
ADDRESS
Science Publishing Group
1 Rockefeller Plaza,
10th and 11th Floors,
New York, NY 10020
U.S.A.
Tel: (001)347-983-5186