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Efficient Products I Like In 2013
(
metaefficient.com
)
3 points
by
greyone
on April 29, 2013
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past
The World’s Most Efficient Windmill?
(
metaefficient.com
)
3 points
by
nreece
on May 13, 2009
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past
Windspire: Propeller-Free Household Turbine Gets Approval
(
metaefficient.com
)
2 points
by
muriithi
on Feb 10, 2008
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past
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