Vol 3, No 4 (2018)

Vol. 3, No. 4, December, 2018

Table of Contents

Articles

Albinus Silalahi, Wesly Hutabarat, Simson Tarigan, Yogi Chandra
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p1
Taye Beyene, Mekonnen Woldatsadik, Girma Chalchissa
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p12
Feng Wang, Hao Wu
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p18