Sustainable Energy – Without
the Hot Air
David J. C. MacKay, (DavidM)
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marvins-underground-k-12
(Marvins-Underground-K-12)
#1
Sustainable Energy – Without
the Hot Air
David J. C. MacKay, (DavidM)
Say Thanks to the Authors
Click http://www.ck12.org/saythanks
(No sign in required)