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Unknown, 2009
Current format, Unknown, 2009, , All copies in use.
Unknown, 2009
Current format, Unknown, 2009, , All copies in use. Offered in 0 more formats
"Take a look at this solar-powered house. Do you see the black rectangles on the roof? They turn energy from the sun into electricity. Using solar power helps keep Earth clean. Look inside to learn more about solar power, and other kinds of clean energy"--Publisher description.
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