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William Kamkwamba: Kiel mi starigis ventoturbinon
4,231,505 plays
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William Kamkwamba
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TEDGlobal 2007
• June 2007
Read transcript
Tiama 14-jaraĝa Malaviano William Kamkwamba starigis ventoturbinon por sia familio per materialoj trovitaj en rubejo kaj maldetalaj planoj, kiujn li malkovris en biblioteko.
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