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Green Power: Earth-Friendly Energy Through The Ages

Green Power: Earth-Friendly Energy Through The Ages
Green Power: Earth-Friendly Energy Through The Ages
SKU: cb111
Thirty ready-to-color illustrations chronicle the past and future of environmentally friendly energy sources. Ranging from ancient Greek and Roman water wheels and medieval windmills to modern solar cell panels, these illustrations depict systems of levers, treadmills, pedals, turbines, and other nonpolluting methods of generating power. Captions identify each drawing.
Price: $3.99
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