the savonius super rotor!
TRANSCRIPT
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8/9/2019 The Savonius Super Rotor!
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http://www.motherearthnews.com/ -
8/9/2019 The Savonius Super Rotor!
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8/9/2019 The Savonius Super Rotor!
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TRANSCRIPT
8/9/2019 The Savonius Super Rotor!
1/3
http://www.motherearthnews.com/8/9/2019 The Savonius Super Rotor!
2/3
8/9/2019 The Savonius Super Rotor!
3/3