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Geothermal Heating

newgroundwork newgroundwork·2 videos
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Uploaded on Nov 6, 2007

A brief introduction to geothermal: the next wave of clean and sustainable energy.

THIS VIDEO HAS A NEWER VERSION HERE: http://www.youtube.com/watch?v=h1LMFy...

newgroundwork has become Topic Simple (http://www.topicsimple.com).

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