ሳይንስተንቀሳቃሽ ስልክ ለኢትዮጵያውያን ገበሬዎች ምርታማነት ያለው አስተዋጽኦTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoሳይንስTesfalem Waldyes Erago18 ሐምሌ 2010ረቡዕ፣ ሐምሌ 18 2010https://p.dw.com/p/324SDማስታወቂያ