ሳይንስበኢትዮጵያ ቴሌግራም አፕልኬሽን ተወዳጅ ሆኗል To play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoሳይንስTesfalem Waldyes Erago21 የካቲት 2010ረቡዕ፣ የካቲት 21 2010https://p.dw.com/p/2tTxRማስታወቂያ