Helicopters are amazing machines. They can take off and land vertically, hover over an area, and fly forward, backward, and laterally. This new nonfiction 8x8 is full of fascinating facts and photographs of these incredible choppers.
Helicopters are amazing machines. They can take off and land vertically, hover over an area, and fly forward, backward, and laterally. This new nonfiction 8x8 is full of fascinating facts and photographs of these incredible ...
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