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At Bear Country Airport, Papa uses a balloon to demonstrate how a jet plane works.
Soon Brother, Sister, and their friends begin designing and making their own models.
The aerodynamic craze leads ultimately to Bear Country balloon-powered tournament and flying circus! The Do-It! section explains how to construct and fly all sorts of balloon-powered jetcraft.
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Book Description Random House, 1996. Paperback. Condition: New. book. Seller Inventory # M0679886869
Book Description Random House, 1996. Paperback. Condition: New. Never used!. Seller Inventory # P110679886869