I tried to post this on the Aerodrome just before the crash, but it has as many fans here and rather belongs here on the sea . . . Mrs Clipper found and bought this for my naval obsessed grandson age 5, I liked so much I had to order my own copy, see what you think! Very cool cover art!
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Close up of author info
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A glimpse inside
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Interesting text explains the theory and shows a few photos of real use, very cool!