Tuesday, October 15, 2013

GPS အေျခခံ


GPS အေျခခံ
ဦးစိန္၀င္း (ဒုတိယၫႊန္ၾကားေရးမွဴး)
ေၾကးတိုင္ႏွင့္ ေျမစာရင္းဦးစီးဌာန
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