ArchiveVolume 3, Issue 2, March 2017
Abdullah Murrar
Pages: 18-27     Published Online: Mar. 21, 2017
DOI: 10.11648/j.ajwse.20170302.11        Views 2068      Downloads 141
Vladimir Zlotopolski
Pages: 28-33     Published Online: Jul. 21, 2017
DOI: 10.11648/j.ajwse.20170302.12        Views 1876      Downloads 129
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