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I Didn't Know That Some Planes Hover (Wow! I Didn't Know That!)
I Didn't Know That Some Planes Hover - Wow! I Didn't Know That! Author:David West Did you know that one plane had 200 wings? That some planes have none? That helicopters can fly upside down when they loop the loop? — Discover for yourself amazing facts about flying machines, from the earliest hot-air balloons to the latest computer-controlled aircrafts that can change shape as they fly, in this awesome book all about planes.&n... more »bsp;« less