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פול מקריידי עף על כנפיים סולאריות
904,466 plays
|
Paul MacCready
|
TED2003
• February 2003
Read transcript
פול מקריידי- מהנדס כלי טיס, אקולוג וחובב תעופה מושבע-- מדבר על הקריירה הארוכה שלו.
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