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Renewable Energy Published February 2, 2014 A simplified explanation of the types and sources of renewable energy with their benefits and drawbacksPrice:$12.30 (as of the date/time of this post. detailsProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on www.amazon.com at the time of purchase will apply to the purchase of this product.) Read more